Defeat the boss of Ancient Egypt
Beat any level without getting hurt
Convert 3 dinosaurs to your side by destroying their helmets
Complete a level from the start at over 100% gameplay speed in one sitting.
Create your first 6 gun stack
Die in the spikes in the tutorial area of level 1
Buy 4 different upgrades for one gun type
Trip a Therizinosaurus with the Hot Butter Spreader
Buy at least one of every upgrade
Revert at least one gun to get some money back
Buy 16 different upgrades
Defeat the boss of Prehistoric Nova Scotia
Find 16 guns
Find all guns
Find the Secret Red Light District
Find the Secret Monument to Parallax
Kill a Giant Flea in Fireball Fury
Help Templeton unlock his secret room in Amethystine Depths
Find all 4 of any gun type
Find All Secrets
Replay any previous level with new inventory (Choose Level menu)
Beat a level in coop
Beat the campaign on any difficulty
Beat a challenge in coop
Clear 2 Challenge levels
Clear 8 Challenge levels
Clear all Challenge levels
Find the Jump Pad
Kill over 50 Gnaar in a single level
Beat any level without dying
