I developed the new Wall Collision on my own, I hope you enjoy it, if you plan to use it, or any of my engine, please give proper credit. I learned to add a limit similar to @pulljosh 's ground detection. Thanks to @pulljosh for his improved version of ground detection :) Give proper credit, if you use this engine, give credit to me, and give a link to the project. Walk on the slope! ---OLDER VERSION HISTORY BELOW--- Used a new wall collision type, while I didn't make it, I can't say the place where I found it made it too, I seen collision types like this several times before.
Collisions are now improved, I don't feel that they are perfect yet, but they're definitely an upgrade. Experimental Edition is no longer used as I felt there is no need supporting it.