This is a pretty solid entry! Reflecting enemy projectiles is a mechanic I haven't seen super often in games before. The aesthetics are really nice and fit the geometry theme very well. Also, A+ title.
I have to say, though, that I found the controls not feeling very good. I felt like I had almost no control over where the reflected projectiles go and I often felt like projectiles went straight through my bat swing, possibly connected to the hand switching? I feel like improving the feel of the bat a bit could really turn this into an outstanding game.
Also, not giving you a checkpoint after the final boss' first phase felt a bit mean. The music is a banger, though, so I could live with it.
(Oh, and also for some reason the writing made me feel like I was the bad guy. Like, that poor golem :( I wonder how intentional that was)