It's cute
Love the rage game vibes this have, reminds me a little of The World's Hardest Game, I think that might be a direction you could consider to go, just need to practice some more level design.
I'm afraid the web build is broken tho, all of the little blue squares on level 2 were maniacly jittering for me, wich made their patterns kinda weird, and most of them seemed to be out of bounds actually. (This might be intentional tho, I can't be sure lol, but if so I would wonder why there are so many enemies with actual patterns outside of the stage, so I'm assuming it's a bug)
I think it's funny that Clara goes from a trapezoid to a full square just by grabbing a gun, way to go Clara, gotta get the proper wardrobe for a new weapon
As someone else pointed it out as well, would be great to have an indication on the first level that you're supposed to use the right mouse click for the big triangles.
Also this is not really a metroidvania, it's just a level by level game, wich is fine by itself, but doesn't really fit the jam's genre x)
(I'm sure Clara is very magical tho)