I fell that somehow this game feels very similar to mine, in that it also has many of the same problems.
First, there is no music. I can empathise with running out of time and not adding music, but it's hard to immerse yourself without music. And no sounds. Also, the enemies have too much health. I find myself running in circles around them and waiting for them to die... It's pretty boring, especially at the beggining. So I would increase the damage of all weapons. But I like the graphics.