Collect diamonds and avoid monsters.
You have to collect all diamonds to exit the level.
After all diamonds are collect, try to find the exit.
Stones and diamonds can drop and kill you.
They also can kill monsters. Use this feature.
There are 4 kinds of monsters:
Security Guard 1 - guards perimeter (moves cw)
Security Guard 2 - guards perimeter (moves ccw)
Wanderer - moves randomly
Pursuer - follow you if you are near.