Not a lot of content just yet, but What IS there is a very solid skeleton. I especially like the enemy design and the wall textures in the first mission are solid. Movement and the jumping feel just right, and I've had a copse ragdoll/expand all over the place randomly from across the level, and I could spot a few enemies spawning while in my line of sight.
SMG is really satisfying to fire, I'm guessing the sound and fire rate have a lot to do with it. The other gun is a bit weird because it doesn't return all the way down after the recoil, causing me to have to lift the mouse, move it upwards and drag down the weapon after every few shots not my favorite thing.
Anyway - Solid build, keep it up!