A few notes/suggestions:
1. I would like it if you could quick-swap between weapons using the mouse wheel. It would allow me to swap without taking my hand off of WASD, and it's also what I use more commonly in other FPS games.
2. The spread on the rifle and revolver feels rather exaggerated. I could stand perfectly still and aim directly at one of the big guy's heads at decently close range and still miss the first shot due to spread.
3. It would be nice if the bomb guys exploded when you shot them instead of just ragdolling so you could lure enemies into a group and shoot the bomb dude to deal a large amount of damage.
4. It feels odd to be able to change your momentum midair with WASD. If I'm mid-jump and i hold A or D, I start to move sideways like I have magical powers of flight.