You have the basics down for the most part, but like the others, I really dislike the control scheme.

It certainly looks like you've worked hard on this! However, there's still more work ahead of you before this can be a decent game. These are the most serious issues with it, currently:

- enemies can spawn or move inside of the player, where they can't be killed
- health pickups can appear underneath parts of the UI, almost completely hidden
- the range of the knife is too short to be useful as an offensive weapon
- very awkward movement controls, WASD would be more intuitive
- the gun is included in the player's hitbox

For now, don't worry about the graphics - the mechanics and functionality of the game are more important to making it fun. Resolve the issues listed above, then start thinking about what you can add or change to make the player's experience more interesting or streamlined.

If I could make one suggestion for what to do after resolving those issues: instead of making the knife a selectable weapon, give it a dedicated key, such that pressing it would attack with the knife immediately. Alternatively, instead of using 1/2 to select between two weapons, have a single button to switch weapons. In any case, don't be discouraged - keep at it!

It's a good game with lots of potential. I just have trouble with the controls, try making it with the wasd and arrow key controls instead of what you were doing. Update the graphics and make them a bit more cleaned up, and you will make it so much better. (not that I don't like them) But that's about it make sure to keep making this better and you'll get 5 stars from me.