In this guide I will learn you how to make land mines, mines that will blow you to pieces.. Moahahhahahhah... err.. oops, sorry let's continue with the guide...
Step 1
I assume that you got your ground for your map, or if you don't; Make One NOW!.. and texture it in any texture you like... Now we got your ground and it will look something like this
Step 2
Make a flat brush in any texture that you would like on your mines.. (you can make alot of mines, it's up to you how many people you want to blow up). Put the flat brush (or the brushes) on the ground of your map. I made mine in yellow so you would be able to see them.
Step 3
Now mark all your mines and right click on one of them (if all of them are marked) an press Tie to Entity.. and pick func_breakable from the dropdown list. Give them a name (ex: kaboom)
Step 4
You also have to make your landmines invisible (or you don't have to, but it's much more harder to aviod to get blown up by the mines if they are invisble). Make the following properties on your mines.
Step 5
The only thing you got left are to make a trigger_multiple (or a trigger_once if you are building a singleplayer map) with the AAAtrigger texture. Make a trigger_multiple over every mine and make the target to kaboom as the picture shows
