The criminal is the walks into the camera, he is also huge.
Level 2
It's the one who's wearing a sock on his head.
Level 3
Look closely, it's the one who's breath doesn't steam.
Level 4
Drag each guard away, the baddie is the one who then walks into a
wall.
Level 5
When you're chasing this guy, don't run after him, turn right,
take first left and go along top-left-corner passage. This is a
shortcut, and the murderer is the one who comes out the bottom of
the screen.
Level 6
Knock each guard down, the one who doesn't look around is the
culprit.
Level 7
Crawl(so you don't leave footprints) and follow footprints from
dead guy to the murderer.
Level 8
Listen for the one with a noisy heartbeat.
Level 9
Go to room in bottom right to find a wig. Then walk past guards,
culprit should raise rifle.
Level 10
Kick open door at end of corridor, then wait for time to expire!