Entity line of sight
If it can see you, stop sprinting in a straight hall. Break vision at a corner, then wait.
Hide rules sit in this resource for early levels.
Level routing
Codes and colored items repeat. Write them down. Guessing wastes sanity.
Do not split for a souvenir if the exit is already open.
Stay together
A lost teammate becomes bait. Use voice for “stop” more than for jokes.
If someone is chased, others should not all peek the same corner.