Here is the full list of all 19 Angry Video Game Nerd II: ASSimilation achievements.
Found the Swear'n'Scout
Dropped 100 F-Bombs
Defeated Death Mwauthzyx
Perfected a stage (No deaths!)
Completed the sexforce
Found the Turbo Pad
Found the cape
Defeated Board James
Found the Glove of Power
Collected all cartridges in a world
Collected all cartridges in a level
Endured the tutorial
Found the Uber Scope
Found all the armor
Collected every cartridge in the game!
Perfected all stages
Beat Old School difficulty
Beat Hard as Balls difficulty
Beat F***ing Impossible difficulty