Nice attempt, but . . .
- This game can't be paused or exited since this game goes on fullscreen by default. When your game has to be manually killed with altF4, that's not good!
- Your movement without the "dash" is way too slow!
- I can tell that English probably isn't your first language so I'm really nitpicking over here, but in the "info"-section, it says that you use the shift-key to both "run" and "dash". The button makes you run, objectively, not dash. So that's what it should be named as. Also, you don't "click" a button, you press it
- The bullet-spawning gameobject spawns the bullet all over the place, instead of out of the barrel of the gun, making this game virtually unplayable