You wake up in a tiny cell. There's your bed, a toilet, a sink, and a tiny desk. The door opens and outside is a guard holding a gun.

Guard: Get up.Your first test is today. If I'm being honest, you're unlucky if you survive.

You get up, and follow the guard. You're in no position to object. You walk last multiple doors all with different labels of different creatures. Then you finally reach it. Scp 173's containment chamber. The guard forces you in and now you're face to face with a dangerous entity. What do you do?