The sprites look like they got filtered when you imported them, making them look blurry (unless
thats intended).
It isn't very clear where I can and cannot go, there are some invisible walls, and some walls that look like I shouldn't be able to go through, but I can. Maybe everything I can't go through is one color, and everything that I can go through is another?
I feel like the shotgun should send bullets in different directions, rather than just randomizing their position. Like, they should be spread like +- 5 degrees
Enemy pathfinding would be nice.