Knowledge Day Remastered

''This page is about the 2020-2021 version of the event. For the original 2019 version of the event, see Knowledge Day.''

Knowledge Day Remastered is a new version of the 2019 Knowledge Day event released September 25, 2020, and running through October 16. In it, you defend the Citadel and the priceless knowledge contained within by fighting battles on multiple fronts. For the full details, check out the official post and the update post.

In 2021, the event reappeared September 9, 2021, running through October 6. The 2021 release of the event was mostly the same as the 2020 version, with a few small changes in the rewards table (noted below). Unlike the 2020 version, where content was gradually added over the course of the event, all features were available from the beginning in 2021.

Library cards and archive documents
The main part of the event works as follows: in all battles (except for training grounds), a library card is hidden somewhere on the map (usually on one of the edges). Click repeatedly on the library card to collect it, similarly to the Easter Eggs event. If you then win the battle, you get the library card.

To access the main screen for the event, click on the icon for the event on the main screen (at the bottom left). There are two parts of this screen. The first displays your current rank in the event, which is determined by the number of archive documents you've obtained. (You get these documents by completing the other tasks in the event). Similarly to the Invaders event, there are two rows of rewards for your ranking, one for all players, and one for players who have purchased the battle pass. For the full rewards table, see below.





The second screen (which can be reached using the tabs at the left of the panel) allows you to fight the various special battles in the event. The first allows you to fight a special PvE battle at the archives, similar to the Ardheim events such as Technology Triumph. If you win the battle, you get a number of archive documents, which increases with the difficulty level. You can only fight three of these battles per day, or six if you have the battle pass; if you have used up all of your battles, you can buy three more for 150 gold. The costs and rewards for each battle are as follows.

Note: in the initial 2020 release of the event, these battles also cost library cards (3, 5, 7, 10, and 13, respectively). However, this cost was removed in the October 2, 2020, update.

Each difficulty level features three possible maps and five possible sets of enemies. These are each randomly chosen (that is, you can have any possible enemies on any possible map). The maps are "archive" versions of previously released maps; the possible maps on each level are:


 * Recruit: Archives - Problems of civilians, Archives - Lost souls, Archives - Vulnerability
 * Fighter: Archives - Military tribunal, Archives - Overthrow, Archives - Enemy of my enemy
 * Veteran: Archives - Sand Gates, Archives - Pass of the Dead, Archives - In front of the throne room
 * Commander: Archives - Until midnight, Archives - In search of Hydra, Archives - Border mobilization
 * Heroic: Archives - Absolute zero, Archives - Crystal rustling, Archives - Clear sky

The full details for each difficulty level are as follows. Note that the troop loadout for you is always 4I, 3St, 2HI, 2Sp, 1V, 1HM, 2Su, except for "Archives - Pass of the Dead" which is 3I and 4St instead.

Special missions


During the event, new missions are available in your regular missions window (accessible from the skull in your main window) under the "special missions" tab. However, the wording of these new missions is often very cryptic. Here are the currently known missions.

Note: In the initial 2020 release of the event, only PvP battles counted towards progress in these tasks, which made some of them (e.g., the convoy tasks and fuel tanks) completely impossible. In the October 9, 2020, update, this was fixed so that all tasks counted progress in all battles, except for the "Fire from all weapons" task, which still requires PvP.

At the beginning, the first three missions are available, and completing them unlocks other missions. When the event was first released in 2020, you would go back to the starting missions after completing all available missions, allowing you to complete the whole cycle multiple times; the last mission was added later in 2020, probably to prevent this.


 * There can't be enough of fighters badges...
 * Task: Defeat 500 enemy troops.
 * Reward: 500 experience, 2500, 10x SRK Mk.III, 100 archive documents
 * Unlocks: "Fire from all weapons!"
 * Restoration of former Empire-controlled territories has always been the highest priority.
 * Task: Capture 10 sectors on the world map.
 * Reward: 250 experience, 750, 3 Support Chests, 100 archive documents
 * Unlocks: "Social survey..."
 * "It seems like electricity, but it works in a strange way. We need to study this issue better" - Dr. Rifenthal
 * Task: Obtain 250 Tesla research points. You may need to go to the world map and back to your base for this one to register.
 * Reward: 500 experience, 2 ionite generators, 1 ionic compressor, 100 archive documents
 * Unlocks: "Dark and mystical..."
 * Social survey among population showed that the level of Resistance influence was not so great. We need to improve our performance.
 * Task: Obtain 250 influence points by capturing sectors. (When initially released this required spending 250 influence points opening new zones, but this was changed in the October 9 update.)
 * Reward: 250 experience, 3 elite chests, 250 archive documents, 1 archive chest
 * Unlocked by: "Restoration of former..."
 * Unlocks: "Fuel is a valuable resource..." and "Red Berets are all around..."
 * Dark and mystical, forbidden and alluring. It is unlikely to resurrect anyone, but it can cause harm.
 * Task: Obtain 500 occult research points.
 * Reward: 500 experience, 2 violated tokens, 1 Occult Scepter, 250 archive documents
 * Unlocked by: "It seems like electricity..."
 * Unlocks: "Knobs and chains..."
 * "Fire from all weapons! Shoot to kill! I will grind you to dust!" - from the dialogue of the contending Commanders
 * Task: Do 10,000 damage in PvP.
 * Reward: 250 experience, 50 keys, 5x SRK Mk.IV, 250 archive documents
 * Unlocked by: "Fighters badges..."
 * Unlocks: "For a full recovery..."
 * For a full recovery of soldiers, it takes not only regular portions of BF-13 containing substances, but also healthy sleep and nutrition.
 * Task: Heal 15,000 damage.
 * Reward: 500 experience, 10 resonators, 5x Sacred landing, 250 archive documents
 * Unlocked by: "Fire from all weapons!"
 * Unlocks: ""Have you heard?", "We heard that you like tanks...", and "Unapproachable and unshakable..."
 * Fuel is a valuable resource in war, so it is more important than ever to conduct regular sabotages to destroy this strategic resource of the enemy.
 * Task: Destroy 25 fuel tanks in sabotage missions.
 * Reward: 250 experience, 750, 5 dominion chests, 500 archive documents
 * Unlocked by: "Social survey..."
 * Knobs and chains, bolts and nuts, unseen mechanisms and walking machines. This is only a small fraction of what we have to study.
 * Task: Obtain 500 mechanics research points.
 * Reward: 500 experience, 2 two-volume drawings, 1 Tome of Drawings, 500 archive documents
 * Unlocked by: "Dark and mystical..."
 * Unlocks: "The Old Reich honors..."
 * "Have you heard? Some smart guy sprayed caustic gas from a bottle to a sergeant! Now there is a tribunal waiting for him" - from the soldiers conversation
 * Task: Use 25 mustard gas.
 * Reward: 250 experience, 5x Gas bomb, 500 archive documents, 1 archive chest
 * Unlocked by: "For a full recovery..."
 * Unlocks: "The basis and honor..."
 * Doctor! Get a doctor! He needs immediate care!
 * Task: Heal 60,000 damage.
 * Reward: 500 experience, 250, 75 city plans, 750 archive documents
 * Unlocked by: "The basis and honor..."
 * Unlocks: "Maximize firepower..."
 * The basis and honor of our army! Without them, we will not be able to get through any battle!
 * Task: Deploy 250 squads of infantry.
 * Reward: 250 experience, 25 resonators, 25 flywheels, 750 archive documents
 * Unlocked by: "Have you heard?"
 * Unlocks: "Doctor! Get a doctor!" and "Some looters believe..."
 * Maximize firepower and inflict the most damage in the shortest possible time - the key to success in intercepting enemy convoys.
 * Task: Do 900,000 damage.
 * Reward: 500 experience, 7 Trophy Chests, 50 incriminating documents, 1500 archive documents
 * Unlocked by: "Doctor! Get a doctor!"
 * Unlocks: "Only the most desperate..."
 * "We heard that you like tanks. That's why we put the tank in the tank so that you could make war while you go to war" - mechanic U. Zibit
 * Task: Do 650,000 damage to the "Menno Doomerville tank" convoy.
 * Reward: 250 experience, 250 RP, 15x Transformation, 1250 archive documents
 * Unlocked by: "For a full recovery..."
 * Some looters believe in the existence of mythical half-men, half horses. Some even claim to have seen them alive.
 * Task: Do 700,000 damage to the "Centaur" faction convoy.
 * Reward: 500 experience, 15x Master Skirmisher of the Bloody Barkhan, 15x Master Wasteland Vulture, 1500 archive documents
 * Unlocked by: "The basis and honor..."
 * The Old Reich honors and values the purity of the genetic line and is studying this issue in every possible way.
 * Task: Obtain 500 genetics research points.
 * Reward: 250 experience, 2 barrels with genetic material, 1 stasis chamber with genetic material, 750 archive documents
 * Unlocked by: "Knobs and chains..."
 * Unlocks: "To release..."
 * "To release a multi-million dollar discharge from one place and take it in another is a trifling matter. It can also be like this, look .."
 * Task: Spend 1000 Tesla research points, either in the Academy, the Artillery Factory, or by donating to clan tasks or technology.
 * Reward: 250 experience, 100 RP, 1250 archive documents, 3 Occult Skulls
 * Unlocked by: "The Old Reich honors..."
 * Unlocks: "Horns and hooves..."
 * Horns and hooves, skulls and bones, circles and runes, repay them in full!
 * Task: Spend 1000 occult research points, as above. Spending points in the cursed ruins will also work for this task.
 * Reward: 500 experience, 100 RP, 1250 archive documents, 3 Ion Accelerators
 * Unlocked by: "To release..."
 * Unlocks: "Wrench, hexagon..."
 * Wrench, hexagon and a handful of bolts, but don't forget to pay for the work.
 * Task: Spend 1000 mechanics research points, as above.
 * Reward: 250 experience, 100 RP, 1250 archive documents, 3 amps with selective gene
 * Unlocked by: "Horns and hooves..."
 * Unlocks: "My grandmother..."
 * My grandmother is a radio operator, and my grandfather is a scout. They met in the infirmary, after being poisoned with chemicals.
 * Task: Spend 1000 genetics research points, as above.
 * Reward: 500 experience, 100 RP, 1250 archive documents, 3 Doctoral thesis on Mechanics
 * Unlocked by: "Wrench, hexagon..."
 * Unapproachable and unshakable, can it withstand your onslaught?
 * Task: Kill the "Citadel" event convoy twice. Note that you must destroy the main cannon (the main convoy boss) to get credit.
 * Reward: 500 experience, 10x "Rage of the Dominion" deserter, 15x "Phoenix" defector, 1250 archive documents
 * Unlocked by: "For a full recovery..."
 * Only the most desperate Commanders are able to use it in combat, inflicting colossal damage to themselves and their opponents.
 * Task: Use 15 Armageddon in battle. Only one use per battle will be counted.
 * Reward: 500 experience, 15x Enhanced Personal Shields, 10x Double Personal Shields, 1500 archive documents
 * Unlocked by: "Maximize firepower..."
 * Red Berets are all around. They are not welcome anywhere and try to be the first to open the fire
 * Task: Kill 50 Dominion soldiers.
 * Reward: 250 experience, 15x Gas bomb, 50 Unstable Ionite Cores, 750 archive documents
 * Unlocked by: "Social survey..."
 * Unlocks: "Use these strange cards..."
 * Use these strange cards to get the knowledge of the darkest secrets of the world
 * Task: Use library cards 15 times. Note that each time you spend library cards counts as only one use, regardless of how many cards are taken.
 * Reward: 500 experience, 1x Elite Kinetic Protection, 1x Elite Kevlar Armor Plates, 1250 archive documents
 * Unlocked by: "Red Berets..."
 * Unlocks: "Look for them..."
 * Look for them in the darkest corners, victory will bring you not only glory
 * Task: Find 10 library cards.
 * Reward: 250 experience, 4x Legendary Equipment Modifier Module, 2x Elite High Quality Fabrics, 1500 archive documents
 * Unlocked by: "Use these strange cards..."
 * Unlocks: "Conquer the top..."
 * Conquer the top of the world and prove you are best of the best!
 * Task: This task appears to be for collecting 500 world rating points. When it was added in 2020, World Rating was not active, so there was no way to complete this task. In the 2021 release, there is a World Rating active. but getting WR points still does not appear to count towards the task. Even if it were working properly, getting 500 points in a single event is clearly impossible, so this task may be deliberately intended to be an impossible mission to prevent the mission set from starting over at the beginning again.
 * Reward: 250 experience, 5 legendary chests, 1250 archive documents, 3 archive chests
 * Unlocked by: "Look for them..."

New sectors
In the October 2, 2020, update, four new zones became available in the northeast of the map (just beyond the Ardheim area). Two of these, "Platinum Areth" and "Cuesta over minefields" are immediately to the northeast of the existing sectors, with "Power lines" beyond "Platinum Areth" and "Field Labs" beyond that (covering the area around the Rosenstein generator). See Sectors for details.

These zones feature new enemies, Brenner deserters, troops that have abandoned the fight at Brenner and gone off on their own. They are similar to the regular Brenner troops, slightly weaker at lower levels but slightly stronger at the highest levels.
 * Deserter of the Brenner Line (infantry): Similar to a Guardsman (Brenner), in particular with a very long range which makes them quite dangerous.
 * Fratricidal killers (stormtroopers): Similar to a Cuirassier, these feature very high health and armor levels.
 * Silent soldiers (heavy infantry): Similar to a silent sentry, these units can put out high damage at long range with a high rate of fire, making them one of the most dangerous units on the battlefield.
 * Sleepless warriors (special): Similar to a reconnaissance group, these sniper units come in groups of three, which gives them a high degree of firepower, although at a low rate of fire.
 * Old wreck (vehicle): This looks similar to a Hammer, but is significantly more powerful, even more than a fully upgraded Hammer.
 * Stolen Trench Stag (vehicle): Looks like a Stag with the "Trench Stag" skin, but even more powerful than a fully upgraded Stag.
 * Captured "Tractiongeschutz" (heavy machinery): Looks like a Korund with the "Tractiongeschutz" skin, but also somewhat upgraded.

Wandering enemies


The October 2, 2020, update introduced new "Wandering enemies". These are enemies that appear on your world map every 2 hours and stay for 1 hour before disappearing again, so you have to keep a close eye! Their difficulty and rewards depend on the total number of sectors you have under your control.

The different missions are as follows. All missions have a troop loadout of 4I, 3St, 2HI, 2Sp, 4Su.

Special clan convoy
During the event, a new "Citadel" clan convoy will be available. This has the same mechanics as a regular clan convoy, but will reward a special "Archive Chest" as well as archive documents. This convoy was released October 9, 2020. Like other clan convoys, it has five difficulty levels and refreshes with the rest of clan tasks at the end of Sunday.

The convoy consists of the "Citadel defensive system", a giant cannon which fires at your troops. It is also defended by two side turrets, which have their own separate HP pool (each side turret has the amount listed below) and are destroyed separately; once the turrets are destroyed, you can attack the main cannon.

The reward for the killshot is 1 archive chest.

The enemy troops at each level are as follows. They are the same for each difficulty level; the only thing that changes is the level, which is 0 for all troops at Recruit difficulty up to 4 for all troops at Heroic difficulty.
 * 1x Left flank of the Citadel defensive system, 1x Citadel defensive system, 1x Right flank of the Citadel defense system, 50x Omega Legionnaire, 50x Beta Legionnaire, 50x Alpha Legionnaire, 50x Delta Legionnaire, 10x Artillery bombardment, 10x Mustard gas, 5x Gas bomb

Full rewards table
Here is the full table of rewards for each level of archive documents reached. All players get the regular "reward" column, but only players who have purchased the battle pass will receive the "battle pass reward" column. Not all levels have regular rewards.

The table below shows the rewards for the 2021 version of the event. The changes with respect to the 2020 version are as follows:
 * In 2020, the level 9 reward was 15 gas bombs instead of 10. Similarly, the level 43 rewards included 25 of each vehicle instead of 20.
 * In 2020, the level 52 reward was Rosenstein and his skin instead of Mona. The level 104 reward was, instead of Rosenstein, 15 landings and 15 mass landings for the basic reward, and 15 sacred landings and 15 mass landings for the battle pass reward.
 * In 2021, most (although not all) of the reward levels were rounded to the nearest 10 points.