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