Simple concept with a reasonable execution. Not too shabby for a first game jam. The web player's size defaulted to too small to see the entirety of the game - I had to go fullscreen.
The movement of the player felt a bit awkward, it overshot a lot since you kept moving for quite a bit after you stopped pressing the button. I also got a victory screen when there was still 1 enemy remaining. The gameplay also wasn't particularly unique or inspiring.
Still, well done for a first jam, it isn't easy to make something from scratch!