I thought this was amazing for a Pico-8 game. You could tell that you took some time on this project and added a great amount of polish. The ice and fire effects were some of my favorite things to see and you seemed to utilize the potential of the engine.
You were able to add a decent story for such a short game and I didn't find one thing about it confusing or difficult to understand. The controls and sliding element added a bit of a challenge, but that doesn't take away from the playability. It's its own learning curve and not a bad one. If I were to give criticism, I would say having more variety of enemies, rooms, and collectables would take this to a higher level. It's short and sweet, but you could make it even better with a bit more variety.
Thank you for making it! Also, what's that necklace thing?? I wasn't able to get it.