Hey, so my question is,
how can i make it when the player is touching a prop, he gets eliminated ?
Just like in Roblox, with those red kill parts 
Thanks for any advice!
There’s a few ways you could do this. Easiest would probably be to use a trigger or mutator zone sized or placed on or over the prop, then when triggered, set the FortCharacter’s health to zero, so they despawn or perhaps send them to the lobby. Or for more dramatic effect, blow them up with an Explosive Device.