I'm taking the liberty of giving feedback because you wanted it.
I'll ignore that the game had a time limit of 3 hours. I try instead to see what could have been if there was a good time.
1) The graphic style does not match. For example, the main character has a different perspective than the environment, the mole, or the guy with the sword. The weapon itself is in a completely different style than the figure.
2) Sometimes my character disappears for no apparent reason. I suspect she's dying for some reason, but I can't really tell.
3) When my character disappears, it doesn't get deleted, it just seems to be moved somewhere to the top left. I can tell by the fact that you can keep shooting even though the character is no longer on the screen.
4) The main character's hitbox doesn't match the perspective. The hitbox should start further down (that e.g. the enemies can walk behind the main character)
5) Was expecting WASD controls and no arrow keys.
6) At first I didn't know who the main character was or where he stood. In this case, he should start in the middle. Then it becomes clearer.
7) I don't know if I scored or not. Health bars, effects, anything would be good. It would also be good if the ammo wasn't so tiny.
8) There is a "You Won" status in the game, but not a "You Lost" status... that's probably what most players see.
9) The game should restart without reloading the whole page.
10) There is no such thing as a main menu explaining the game. (e.g. the controller)
Those are the most important things that struck me. I hope that doesn't discourage you, but motivates you to keep going. After all, you've completed a game and hopefully made it the way you envisioned it.