Complete one optional tomb.

Complete one challenge.

Completed the mission "Best Minion Ever"

Completed the mission "My First Gun"

Turn off 40 Lights without breaking them.

Find and return the crying child's Teddy Bear.

Make 10 Spiders flip belly-up.

Escape from the Red Line.

Take the Custom Pistol from the Locked Box.

Complete training sequence.

Unlocked 1999 Mode.

Completed the Main Campaign on Normal difficulty or above.