This video explains all you need to know to use the MMFeedbacks system in the Corgi Engine. It'll let you add great game feel to your game within seconds, simply by adding feedbacks and binding them to your actions.
The Corgi Engine is a Unity 2D + 2.5D Platformer Kit, available on the Unity Asset Store: https://www.assetstore.unity3d.com/#!/content/26617?aid=1011lKhG
It's a very fast, single or local multiplayer non-physics based engine, packed with features, described below. It's mobile friendly, works well with other assets, and is basically everything you need to start creating your own 2D game right now. Wanna give it a try ? Check out the demo! http://www.moremountains.com/corgi-engine-best-unity-2d-platformer