Here is the full list of all 12 VECTORLORD achievements.
Play your first level
Lose your first game
Beat the game on Normal
Beat the game on 1983 Mode
Use a full loadout
Recover your first corpse
Find another lord trapped inside the phage
Beat every level in a single run
Get more than 300 Deltas in a single level
Return to beat an already beaten level
Use all 3 lightning powerups
Get your first jackpot