Really cute character design, I'm going to be the odd one out and say I really enjoyed the echolocation mechanic as a way of searching for and revealing secret passages! I thought that was a super cool way to incorporate echolocation into a game! The changing palettes was very cool, though not really clear why it was happening. Some design variation between different areas of the cave with rocks and other decorations could be a nice touch. Overall I really enjoyed it, great job!!!