Very fun to play, but it could use a lot of balancing. Once you unlock the shield, it becomes very hard to die. It's also not super clear exactly how the shield works, or when it's active. I might suggest that the shield should be a time-based thing, like it only lasts for a few seconds. Also, when the dash is active, it seems like a lot less stuff spawns. The music also stopped working after a bit. These things aside, there's a really fun game here, and I think you should continue working on it!