Played a couple minutes, but my left control and left alt don't work so I couldn't punch anyone. Immediate feedback, I'd expect to navigate the menus with arrows rather than WASD, there seemed to be framerate drops when an alert first happened, moving slower when going diagonally didn't feel right, sound effects would be nice and are pretty crucial for stealth games. I'd expect to be able to close the inventory using the same key to open it. Some places when moving along the walls seemed to get caught.. but aside from the negatives, patrolling AI, alert states, security cameras, pretty good fundamentals dude! On one hand I think the doors should have to be opened with E, but on the other hand I was surprised when one automatically opened when I was trying to be sneaky, so maybe guards could react to you accidentally triggering a door sensor. Hope you keep working on it and posting progress!