Really enjoyed this one. The OST and level design both stand out immensely. "Chronotower" by fwugneo immediately gave me "The Third Sanctuary" vibes. All the levels manage to stand out whilst also being fun and challenging. The gameplay never got overly frustrating despite remaining challenging. All the game mechanics feel like they were used to their absolute maximum. The only exception would be the cannon's, which I genuinely don't think can kill the player. I assume they only hurt you if you're standing on the ground? But not once did I die to a cannon in the whole playthrough.
Took me about 30 minutes to complete and was an absolute blast.