I know I can make it on that way, but my question is How to make them on wall, w.o makeing squares around it...

Can we make holes like doors, windows or passages on walls?

I wanna to make fence so you can see ppl and hit them through it. How to do it?

I have made map, but I do not see radar, HP bar, time bar, not even crosshair?

How do I set up starting weapons???

How I can make terrain in 2 lvls w.o stairs?