The player has fully upgraded one weapon

The player has restored the forests of Arcadia

The player has fully researched the Thuggish Splicer

The player has acquired at least one weapon upgrade

The player has defeated Peach Wilkins

The player has taken at least one Research Photo of a Splicer

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

The player has successfully hacked a safe

The player has successfully hacked a turret

The player has successfully hacked a security bot

The player has successfully completed the Welcome To Rapture Level

Killed 25 enemies with corrosive weapons

Completed all missions in the Arid Badlands