I think the stairs in the game weren't so steep! :
I think I'll do a little bit of experementing!
Well...the maximum hight of an obsticel that a scientist can go over it is 17 units and they can be turned into every number of steps that you want but I'll do farther experimenting untill I'll find it!
Yay I got it and now I will only need to do a little bit more experementing!
As you see in the picture the secret is that the width of the step must be two times bigger then the hight! As I said before the maximum hight is 17 unit. Only then the monster will be able to climb the steps!!
This should be added to the dimensions tutorial,I think!