Little Timmy goes to hell : Post-Jam update

Post-Jam build :

Fixes:

• Collision issue that would get the player stuck on walls.
• Collision issue that would get the player stuick in walls after an explosion.

QOL:

• Finaly added a proper background.
• Light colors changes to match the new background.
• Balancing of the boss fight to make it less spongy & more chalenging.