Here are my thoughts:
- Nice mechanics indeed. Being able to teleport to your pen is a bit strange, but inventive so no worries.
- The SFX was really loud and a bit annoying for me. I would tone that down a bit.
- I don't know what the 'Casette Kingdom' has to do with the dungeon..
- Reminded me of zelda, I'm a fan of Zelda. Nice work
- Besides the'rewinding' of the guardians. There was not much that fitted into the 'rewind' theme.
- I'm a fan of the pixelart. Great job on that!
Weird little setting of a game, but good execution. Did not encounter any bugs or game mistakes. Keep up the work!