It was fun to play, a classic survival game with cool music and visuals. What I suggest is
1) Bring more innovation to the game
2) Maybe implement a theme. Because now I don't feel like anything is going wrong... Except for some robots trying to kill me, but that's kinda superficial.
3) Make the floor tiles simpler. Because now it's the pattern that distracts from the gameplay.
Anyway, good job!