This was a neat little crawler! It was short and to the point which I like, and it was neat seeing the mechanics being introduced with each level.
The AI voice acting was nice, though I actually giggled to myself hearing the AI voice say "bomb". It made me think of the "my le bomb, it le killed people?" meme lol.
The movement was nice and snappy, the headbob wasn't headache inducing which is great, though I admit I am more partial to the WASDQE control scheme compared to just WASD.
At first I thought the timer was going to make this game really tedious and frustrating, but I think it worked really well. The levels are small enough you don't get lost, and I found there was always just enough time to complete each one. I would recommend changing it to show seconds remaining rather than percentage though, easier to tell how much time is left.
The only real complaint I have is maybe make spacebar the shoot button, or at least something other than shift. Just to avoid getting the sticky keys prompt on Windows lol. Aside from that maybe make the dialogues between levels skippable, and with shorter pauses between lines.
Overall though I enjoyed this, good work!