What a great game! First off, LOVED the music! The tunes were great and the timbre fit the theme, and the size and variety of the musical library in the game, really impressive! Secondly, the level design was really creative, though a bit difficult for me, and the sliding of the player, the reach of fire and the hit-boxes of the obsidian spikes bothered me. Didn't find many glitches! Definitely a contestant for the top spot. ;)
PS. Also forgot to mention, fit the theme perfectly! How the character turns into colossal stone-heads resembling the Olmec culture (not sure though), using up a heart as a mechanic and also handing them over to the Sun stone symbolises the significance of the heart and heart-extraction in Aztec and Mayan culture, seems historically accurate, though I am not specialised in Mesoamerican culture or history, so someone who knows more can correct me. Love the attention to detail and the devlog was a fun read.