Very cool laser shooting. Fun and simple gameplay! SFX for shooting is very satisfying, although would have like it more to add sfx on hitting the enemies, and taking damage. The gameplay end very abruptly a lot of the time when you did not notice you got hit before. Also player movement is very fast and floaty, very common with platformer game made with Unity D': One quick improvement I usually do is to mess around with that gravity & mass number in the ridgidbody. Guarantee for better jumping experience.
Overall, great job on this game!