Hello!
In any case, you can with simple collisions too.
In the Mesh Window activate Simple Collisions, and in the top options, click in “Collision” and add any shape you want, although even a Box Collision should work.
After created a Colission Cube click it and you can move, rotate and scale any way you want, I think you should need something like this, because you want a big collider so the character doesn’t climb on it or go through it. And there you go!
Repeat as many times as necessary
I hope it helps you!