Good Concept, Bad controls
I like the idea of merging espionage with robbery as mechanics in a game, and the way you've done it here is simple and fairly intuitive. You do have a problem with the camera going through walls, but that's not something I would expect from anything done on this scale.
No where this game fails for me is in the control scheme. Whenever you have a game like this that requires players to memorize a more complex set of controls, it is important to make note of genre standards. In the case of shooting games, this standard is to use W and S for forward and Backward, A and D for strafing, using the mouse to rotate and aim, and the mouse buttons to attack.
In your case, you could have used the arrow keys (and the keys around them) in lieu of the mouse perhaps, but it is important to stick to the standard as much as possible as this will make your game more accessible and less frustrating initially. No one likes memorizing a new control map.