Here is the full list of all 20 Angry Video Game Nerd I & II Deluxe achievements.
Die 100 times
Ride the Fire Shark
Find all S*** Pickles
Find all the Future Nerds
Unlock all playable characters
Kill Santa
Beat Angry Video Game Nerd Adventures
Find the Glove of Power
Find the Cape
Find the Swear'n'Scout
Find the Turbo Pad
Find the Uber Scope
Find all the upgrades
Collect all cartridges in a level
Collect all cartridges in all chapters!
Beat Angry Video Game Nerd II
Perfect a stage (No deaths!)
Beat the Tower of Torment
Achieve a perfect on all stages in all games
Kill Naggi