Collision and 2D

Hi,

I currently have a 2D backdrop ( 2D png on a plane from blender ) that is the centerground with a mesh collier on it for the player to walk on.

The character is simply a png image on a plane in FBX form from blender.

I am using a CharacterController on it to detect collisions and push rigidbodies around the environment (with a script). However, it does not do a good job at detecting (i.e. i placed a cube in the world, but when I walk up against it, my characater hops on top of it. It will only push it if it is on a steep slope.)

I was wondering what would be the best method of adding collision to the character to fix this problem.

Thanks!