Avid Inventor
Successfully invent at least 100 items
Research PhD
Max out all possible research
Became a Big Daddy
🔒 Hidden Achievement
Historian
Find every audio diary
Dealt with every Little Sister
Either Harvest or Rescue every Little Sister in the game
Weapon Specialist
Acquire all upgrades for all weapons
Five Fully Upgraded Weapons
Fully upgrade five weapons
Broke Fontaine's Mind Control
🔒 Hidden Achievement
Fully Researched a Rosie
Fully research the Rosie
Found Cohen's Room
🔒 Hidden Achievement
Irony
🔒 Hidden Achievement
Fully Researched a Nitro Splicer
Fully research the Nitro Splicer
Tonic Collector
Collect or Invent 53 Tonics in the Physical, Engineering and Combat tracks
Four Fully Upgraded Weapons
Fully upgrade four weapons
Fully Researched a Little Sister
Fully research the Little Sister
Defeated Andrew Ryan
🔒 Hidden Achievement
Fully Researched a Bouncer
Fully research the Bouncer
Ammo Inventor
Invent all possible ammunication types
Maxed All Tracks
Purchase every slot in all four Plasmid and Tonic tracks
Three Fully Upgraded Weapons
Fully upgrade three weapons