25 Doors destroyed
10 000 enemies killed
Complete first day without dying on medium difficulty
Complete the first and second day without dying on medium difficulty
All challenges completed on medium difficulty
1000 enemies killed
Second day completed
Died 250 times
Completed a level on first try
Picked up 50 weapons
First boss completed
First level completed
Completed a level without slowmotion
One hour in slowmotion
100 enemies killed
Game completed on medium difficulty
All weapons and upgrades unlocked on medium difficulty
First weapon unlocked
First enemy killed