Thank you for all the comments! We really appreciate it. This game jam experience is awesome and it is so nice to have all the feedbacks from fellow jammers. The game is made with Corgi nEgine, I got it from a sale and always wanted to try it out, what is a better opportunity than a 48hr game jam? The engine is very well made for any platformer game or any game that needs a 2D character controller with a classic platformer feel. We do have to extend the engine to fit our purposes but hey, that's part of the fun making our own games.
In conclusion, we were overly ambitious with the project and had to skip some tasks we originally thought we were definitely gonna do. (eg. Fine-tune the balance, swap all the assets come with the engine, power-ups, damage the enemies by dashing into them, and cutscenes between levels.)