Award chest "20"

The award chests work specially -- they do not appear in your regular chest queue, but have their own position on your chest page, and unlock when you reach the appropriate level. You thus will only ever get one of each in the game.

When you open the chest, you will receive one item from each of the following lines:
 * 10-20 Landing (100%)
 * 3-5 "Guardian" walking machine (100%)
 * 5-15 Emper exterminator (100%)
 * 15-25 City plans (100%)
 * 1 Award chest "25" (100%)