Great sprite work and worldbuilding. Juicy shoot effect. The dynamic soundtrack was a really nice touch.

The blast shot was really well designed, and I liked the environment and opening text. The hitbox for the player or the monsters range was a little confusing. I always felt like I took damage further from the enemy than expected, which led to many annoying deaths. Also the stationary cultist's collider or something,  is still present after the player destroys them,  so there is just this empty space where the cultist was that the player can't walk through. Really loved the lore and character you gave to the mysterious god thing. 

Firing the blast out felt really good. The screenshake, the knockback, the sound, perfect. I always wanted more energy!  Couldn't figure out how to get through the heart door though :(.