I thought it was a solid 1st outing into the world of 3d. Doing 3d maps are always difficult (which is the number one reason I way prefer 2D). But Yea, the map could use a ton of work. I wish it showed doors, I wish it was way more detailed, I wish it showed completion so when you get to the end it seems more doable to backtrack and see what you missed.
But a lot of people love pseudoregalia so.. maybe I am just not the target audience for 3d metroidvanias.
I thought the hit boxes were pretty rough too. You could attack from like 2 feet away, be nowhere near the enemy, and still hit them. But same for you. The main boss attacks felt very sporadic and jolty. There was a lot of missing feedback animations, like the enemy getting hit and changing color doesn't really feel like you HIT them. there is just a lot of room for improvement in the combat and animation department.
But for a jam game, super solid. I just hope you haven't abandoned 2D because I love your 2d metroidvanias
