Successfully performed 3 different unlockable melee combos.

Performed a stealth kill on 10 machines.

Uncover the secret in the old house.

Take down two or more enemies with one shot.

Increase your item slots.

Avoid Jack's scissor attack by crouching.

Finish off an enemy with the knife.

Use psychostimulants.

Complete the "Mia" videotape without being spotted by Marguerite.

Close an open door by yourself.

Travel to Louisiana.

Capture Fort Sungard or Fort Greenwall

Complete "Hail Sithis!"