Such a unique concept! The artwork is great, as well as the sprite work. I love the UI, gives me a feeling like SMT or Mother series.
My favorite part is the gameplay mechanic of controlling the three Heca's. I appreciate the clear indication that Z /X / C are used for controlling them-- and when you have a key pressed, the key shows a "pressed down" animation with the associated color of the Heca you control. Unsure what SPL / or I assumed Spell Level does, I didn't notice it make any difference of anything, but I could have been doing something wrong.
Level design rocks, and I love the unique challenge of setting up throuple Heca between the dungeon corners to attack enemies. I think the enemy spawner mechanic is fine, but the same enemy typing gets redundant. I like the knockback the player feels when hit. Health is few and far between, but thats also a skill issue for me probably. I like the music, and the game is really fun! Reminds me of a lot of retro games I loved like PKMN mystery dungeon, or Four Swords Adventure, really fun and I would love to see it fleshed out more!