I like it. It's really fun to adapt to the randomness of the bullet.Even more bullet type could be really cool (for a gamejam, this is already good).
Having enemies explodes on death is a nice visual touch, but lingering part can make the game hard to read. Also, I regret that moving too fast is not a viable solution (maybe less drag on the inertia or a radar to show incoming enemies could remedy that)
Good job