Now, I can finally review this game. I had to play it twice due to the 1.1 version making me unable to get to the boss. However, this might show the potential as a speedrun game, since you can really speed up when you know stuff. The music was typically good. I didn't like the underground so much. It wasn't a bad piece, but I personally don't like the tone as much. The lore was a missed opportunity. Like we never knew who the mysterious figure was which could have made the story much more interesting. It's hard to tell me enjoyment with something sometimes, so do keep that in mind. However, the gameplay succeeds in what it tries to be. This could even be a standalone product. I will say the boss though while it did take me some tries was not what I was expecting. Sure, it works, but like I was expecting something different though it might have sort of makes sense. 

May I know if this game is beatable because I couldn't go through the final path for some reason.

I loved the game, it's really fun to play with well-matched music, design, and effects. Everything seems perfect in this game, the only downside I could mention is that I don't find the limitation well represented, and I don't think it relates much to the concept of this jam. But in any case, it's an incredible piece of work. Congratulations!