I made sure to play this before watching the video, so I didn't know everything there is, but here is what I have to say:
1: The rocket jump is cool, but it's the best weapon. You should either give it a cool down, give it a firing arc, or make enemies immune. (BTW you could rip off the shoulder mounted stuff in DOOM)
2: Add the option to remove reflections, AO, bloom, and normal maps (if possible) it would let people like me play the game in full resolution.
3: I should be able to swap weapons with the scroll wheel.
Other than that its a great improvement over the previous. Keep it up!
BTW, this is a weird idea but what if your heath and ammo came from the same bar? Then you could balance stuff by having it make you vulnerable. The you would regain it with heath packs or punching enemies or something. I think it would fit the arcady feel it has so far. But if you lean into a level based design its not needed.