The player has taken a picture of Sander Cohen's corpse

The player has taken a Research Photo of the highest grade

The player has restored the forests of Arcadia

The player has acquired at least one weapon upgrade

The player has successfully hacked a security camera

The player has purchased one slot in any Plasmid or Tonic track

The player has defeated the crazed Dr. Steinman

The player has performed at least one successful hack

The player has successfully completed the Welcome To Rapture Level

Defeat the nine Valkyries

Retrieve all treasure from the Workshop’s center chamber

Read all of the Jötnar shrines