I need urgent help with something pretty simple but I am a beginner. Please help.

[ClockworkOcean]

@ShadowlessHazard

I am making a game as a final project in my school’s IT class and presentations start tomorrow so I have max 3 days left. I am making 2.5D sidescroller splitscreen multiplayer game where two people shoot fireballs at each other. I have made everything but can’t figure out how to make a widget to pop up when player hits opponent.
There are 2 players - one uses wasd to move and J to shoot golden fireball and other uses controller and RT to shoot silver fireball. I need to make it so that silver player is immune to touching silver fireball and gold player immune to touching gold fireball but when they touch the opponent’s fireball a widget shows up telling who won. So if gold player dies widget pops up saying “Silver won” and if silver dies a different widget pops up saying “Gold won”. I have been searching and asking everywhere but I can’t figure this out. Can you take a look at my project and help me?

Here is my project: Dropbox - File Deleted - Simplify your life

Lastly, on the balls, you need to change the collision on the collision sphere to: