2D point and click movement

Hello everyone.
I'm working on 2D point and click game and I would appreciate if you could show me some working scripts that will help me with my aims.

Examples of what I'm aiming for: This War Of Mine, Cat's Lady.

I need movement system: horizontal moves (left and right) by clicking in that direction, opportunity to move my hero upstairs and downstairs the ladder. I don't need any jumping functionality.

The problems I'm facing: my hero can "fly" and his behaviour with gravity is strange (he's twitching).

Thanks

 

Yup , here is a tutorial :- http://forum.unity3d.com/threads/2d-mouse-point-click-movement-system-quick-tutorial.217886/

 

Thanks. But it works in the same way as mine hero's twitching all the time, and when I try to move him, he stands still for couple of seconds and instantly moves to a target. He's also getting behind the scene at Z-axis..

 

try to look this