Complete atleast one level before the time runs out.

Complete atleast one level without shooting any terrorists.

Find atleast one medal.

Complete all three challenges in atleast one level.

Complete all levels without shooting any terrorists.

Find all medals.

Complete all levels without running out of time.

Complete the first floor.

Complete the second floor.

Complete the third floor.

Complete the fourth floor.

Complete the fifth floor.

Put a terrorist to sleep with a fire extinguisher or smoke grenade.

Knock out a knife wielding terrorist.

Finish the last level.

Complete all challenges in all levels.