I’m rather new to Unreal Engine and wanted to make a very simple platformer in Paper 2D but I wanted to know how to setup AI and the only tutorials I could find were for 3D and using nav mesh and tried that method and it did not work.
What type of AI are you trying to achieve? Just pathfinding?
In 2D, pathfinding depends on the type of game you are making.
Top-down, side-scrolling, isometric… They all require slightly different algorithms, and you have to define what is (and isn’t) “walkable” yourself. If your game is tile-based, you could easily implement your own pathfinding (Google the A* algorithm).
Aside from that and AI perception, there’s really no difference in the way UE4 treats AI between 3D and 2D projects. You create the logic of what your characters can and can’t do, then create a behavior tree blueprint. There are plenty of tutorials on this stuff already.