Day 3:
I didn't do any code but a lot of research.
To be honest I wasn't happy with my controller, too basic and had issues with ground detections. So I spend some time looking for more informations about how to do one easily and came across Humble bundle FPS bundle and bought it.
With this in my pocket, I started to look at the code from an assets. Tomorrow, I'm going to use it as a new starting point to do a more functionnal controller.
This jam doesn't start at all as expected since I'm starting kinda from zero tomorrow but I'm happy that I found a solution to progress.