Very Basic collision with uneven things

Is there anything that can have just about the same intention as Mech-Collider, yet not be so downright... unreliable? Mech-collider is... not as trustworthy as I'd like. I want smooth collisions with things with shapes that does not exactly fit any of the built in ones. Is this possible or should I try to adjust my game so it fits the physics of Unity?

Thank you in advance.

You can attach multiple colliders to an object which all cover different parts of that object. You could also break your object down into sub-objects all under a single parent object and place individual colliders on them.

If you have a character model it's possible to attach colliders to each bone.