I can tell the map is procedurally generated, because half the time there is no way to progress and every time I die, the map changes. I would suggest if you are using procedural generation, to make sure you aren't generating broken maps. Other than that, the gameplay was kind of fun and despite no description on what the controls were, I was easily able to figure them out since you made good choices on what they should be (WASD, Space, and LMB are always solid choices for shooters).
Here's where I need to get a bit more critical (it's good for you, trust me) - 3 people is quite a bit of manpower to only come up with what you have here. There were no clear goals or story elements, dialogue, or reason to play at all. It felt like a prototype.
But, if it was your guys' first jam game, then great work!