I’ve been trying several things that I was almost positive would work, but it’s not working.
Like the title suggests, i want to have a little trap that crushes you when you step under it. I tried func_invisible_user with not_kickable deselected, and I tried trigger_multiple. What do I do? 
I’m pretty sure there’s a non-scripting way to do it.
With func_invisible_user, I got it so you had to press to make it crush you, but nothing more 
I have no idea how to do it, I know I would just make the floor into a func_explosive, give it a radius damage, and make it touchable. Great for making land mines too :P. I don’t know if there is a trigger you can set to touchable.
Well, you can just have a script mover move down to do the crushing.
Trigger it by creating a brush, painting it with the common/trigger texture, and turn it into a trigger_multiple brush. Target it at a target_script_trigger, and have that entity call the script to make the mover move.
Or, to be extra nasty, have the trigger_multiple target a target_relay that filters one of the teams out. Then have the target_relay target the target_script_trigger as before and voila! you have a trap that only activates when a particular side goes through.
Could be nasty - use it ‘defensively’ so the objective carrier has to dodge the traps, but the persuing enemy can simply leg it after him quickly. Talk about panic 