I just played the demo and targeting enemies with the jump kick wasn't difficult for me. The only time I had an issue with targeting was when I fought Baxter Stockman and thats because he was flying all over the place. The second play thru I had a much easier time targeting him.

I think the demo was fun but it would have obviously been alot more fun if I had three more playable friends with me. Ten bones is alittle steep so I'm just going to wait until it's the deal of the week.