Hello, I am making a cooperative map, my first submission in fact, and I would like some advice.

How do I set up a trigger that reacts to portals and Ping-Tools?
I need some help figuring this one out

At the very end you shoot a portal and a spike plate will come out and try to kill you. and fail.

And I want to make this event sudden by isolating the character, and having them do one of the few actions they will be capable of, Portaling. Please help.

https://developer.valvesoftware.com/wik ... g_detector

Put a trigger with that on the wall.

thanks, not quite the effect I was looking for, But this will definitely give me the effect. I just need to add some custom textures to explain the function in text. But I still wish I knew portal triggers

Well if you want to detect portals func_portal_detector is your entity of choice.

https://developer.valvesoftware.com/wik ... l_detector