Successfully complete level 2

Upgrade both slots of a weapon in the Single Player Campaign

Kill an Executioner

Kill 50 Chimera with Riley's axe in the Single Player Campaign

Completed a level with the time machine's health below 10 points.

Placed all types of weaponry accessible in the episode on a single tile.

Unlocked a tile for i-volve on any level.

Sold 10 weapons on a single level.

Completed a level without improving weaponry.

Installed all types of weapons accessible on a level.

Destroy four enemies with one throw.

Destroyed 20,000 enemies throughout the entire game.