Sell 30 towers

Destroy four enemies with one throw.

Destroyed 20,000 enemies throughout the entire game.

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

Collected 10,000 bones in a single level.

Unlocked a tile for i-volve on any level.

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

Sold 10 weapons on a single level.

Stare at the main shop screen for 2 minutes

Fly over 2kms

Get to level 8

Hit 20 snowmen while flying the rocket