The Rat

[Tchernobog]

It grinds my gears, it's like random ♥♥♥♥♥♥♥♥.

What's the pattern???

[Kargor]

It's been a while, and I certainly won't look up a walthough for you -- but if you're talking about the prison, I'm pretty sure it's not random. I've had to play around a bit, but there's two things that need to happen: the rat has to pick up the keys, and it has to flee the scene

[Tchernobog]

Figured that out later. It moves diagonally.