Uploaded a new version of the demo today. You can find it in the main game's page.

This demo version doesn't add any new content (except for a very small secret that doesn't even count as part of the completion) but instead fixes many, many small issues found after the initial demo release.

Changes include:

• Added the ability to use the rolling attack in the air 
• Progress is no longer lost when returning to last savepoint, only Stardust is regenerated so the player can collect all of it again if they want, though saving is still manual
• Rebalanced ice moveset
• Entirely rewritten freezing mechanic to eliminate several glitches
• Fixed a certain object respawning infinitely
• Small graphical changes to a couple areas (mostly bg elements)
• Minor layout changes to some areas to improve traversal
• Fixed some spanish translation errors
  
• Many other minor glitches/mechanical issues fixed

This version should be compatible with savefiles generated by the previous one. If you played the original demo, there's probably not much reason to try this one, but you should be able to see all the changes in a completed demo file.

Unless any major or gamebreaking glitches are found, this should be the final version of the demo before the full game's release, still to be dated.

---Same day edit---

Well that's embarrassing. A gamebreaking bug did appear. I fixed it now though. Haha... no more please...