Please play part 1 first, then part 2 and then this part. Why?
Cause you need to get the story.
Part 1: Very Easy
Part 2: Easy
Part 3: Medium.
Part 4: (LAUNCHED NOW) Middium-Difficult
UPDATE 1: Trap made more deadly.
UPDATE 2: More ammo.
Update 3: Ammo updated (AGAIN)