The player has fully upgraded two weapons

Fully research the Houdini Splicer

The player has purchased every slot in one of the Plasmid or Tonic tracks

The player has fully researched the Thuggish Splicer

The player has restored the forests of Arcadia

The player has successfully invented at least one item

The player has defeated Peach Wilkins

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

The player has defeated the crazed Dr. Steinman

The player has successfully hacked a security camera

The player has successfully hacked a security bot

The player has successfully completed the Welcome To Rapture Level