first you need to get out of the map and place a wall then place what your geomerging next to the wall your going to geo merge it into then kick the object out of the way with a box and set it were the barrier was set that to spawn at start no and start a new round geo merge a wall like so then save and quit now start a new round and delete the doors spawn the box and put walls on all of the sides get out of the map and grab the barrier my wall was a little slanted so it came out like this
Another great guide! I didn't even knew I could Geo Merge moveable objects, now I do! Great epic guide !