Start the game for the first time
Unlock your first skin
Kill your first boss in defense or turn-based defense mode
Reach level 10
Reach level 20
Reach level 30
Reach level 40
Reach level 50
Reach level 60
Reach level 70
Reach level 80
Reach level 90
Reach level 100
Get 3 stars in any mode
Buy any upgrade to the maximum level (defense mode)
Buy any upgrade to the maximum level (defense turn based mode)