Installed weapons on all the tiles accessible on a level.

Completed a level without improving weaponry.

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

Used all the different types of geo-charge on a level.

Sold 10 weapons on a single level.

Installed all types of weapons accessible on a level.

Unlocked a tile for i-volve on any level.

Used geo-charges 10 times on a single level.

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

Collected 10,000 bones in a single level.

Didn't let a single enemy reach the time machine throughout a level.

Destroyed 20,000 enemies throughout the entire game.