Noted, I should have said so, but this is mostly a test of the Event system, there's a different that I would use for the real thing, there's a pretty extensive demo here:
https://www.assetstore.unity3d.com/en/#!/content/9076 This has leveling up, skills, inventory, stuff like that, and an over-the-shoulder camera angle instead, but it's still going to be tricky without a real mouse. If I were to program my own camera system I would go for a beat 'em up inspired side-view, like Golden Axe, or the modern games, Rusty Hearts or GetAmped2. But I'm not eager to start ripping out the wires, the appeal of this system is that I have to do very little programming to get started.