I was playing through the level when i got the the section that has the yellow and blue key door and it also has the red key and machinegun, i slid through a door and i just teleported to a prison cell. for 15 mins i was slashing pissing and shooting at bars but to no avail i was stuck. i was thinking maybe its some sick metaphor or a anti piracy measure that activated on accident, i just got the game from a Hatred/Postal Brain Damaged bundle last month