I got stuck trying to exit the elevator down to the test chamber near the beginning of the game. I could not move (I could use the mouse to look different directions) but I could not jump, crouch, etc. I saved the game and tried reloading, but still stuck. I quit the game, reloaded, and tried again: same issue. I ended up restrting the game and then got past this issue.
Just thought I would report it–Love the look and sound of the game guys–great job! 