Boss tower (PVE Boss fight) Solo or Multi

Hello Everyone,
Welcome to the boss tower, where you can fight nowdays 4 different boss with unique paterns and 3 phase per combat :

• The Renegate : A Ninja who betrayed his kingdom who mastered simple but deadly attacks
• The witch : She learned all the forbiden magic from each color of the spectrum
• The warrior : A defender who mastered the arts of war and fire but darkened his heart in the process
• The Ice Queen : A deadly royalty who let the ice pierced through her heart during her quest for power (currently bugged /!)

Face the with your friends or alone through 4 level of difficulty.

• SandBox to learn the partern
• Easy to face a first challenge
• Normal to live the intended experience
• Hard to surpass your limits

(the diffiulty is also proportionate to the number of players)

During the dried days of Overwatch 1 waiting for the 2nd opus, i spent my time creating a PVE experience.
My goal was to entertain the comunity. But after creating some boss, I found it easier for me and better for the overall experience to gather them all in a single mode.

So here is the code, enjoy it and please comment on what could be improved !
(Note : most sound previously implemented don't work right now, as well as some ability cancelation due to workshop bugs)