Pretty alright for a gamejam thing. There were some problems, however. Sorry if I go a little in depth, I'm doing this to gain more experience in game testing.
Firstly, some of the voice lines were a little hard to understand. Perhaps if the amount of distortion was lowered they'd be better to hear. Other than that, the music and sound was good.
The main area of problems comes from the enemies and various issues around them, which makes sense because fighting them is the biggest part of the game.
Sometimes the enemies would persist after the player dies, and they would be in the hub area. When this happens the hub area can disappear immediately and leave the player back in the main level.
When a wave ends, sometimes the enemies would despawn and sometimes they would not. Which is the intended action? When the enemies despawned after a wave ends there would also be no effect as if they had "died" like when you shoot them.
The way the obstacles work makes it almost too easy to have the enemies be blocked sometimes. Perhaps if there was more of a way to "slide" around obstacles rather than coming to a complete stand-still this would be prevented.
Next, the health packs. I felt as if they dropped too frequently. They also persisted after the player died, while I expected it to all be reset. This made it very difficult to die, sometimes even when intentionally trying to die.
And finally, the starting weapon. I have no issue with a melee weapon. However, I feel like it was unnecessary, for as soon as the player gets a gun the fist no longer has any appearance in the game. If there was a choice to go down a more melee based route instead of ranged weaponry that would be neat.