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