The controls felt good and the SFX underpinned everything nicely, so movement felt good. If you want to have a jump at all, you might wanna go for a much higher jump than that.
I think the single-touch instant kill is far too harsh, given there is no option for crowd control and the visibility is pretty low (not to mention enemies spawn and move behind me with no visual or audio cues). While I like the little subversion ofsiphoning rather than shooting, it felt a bit floaty to me since I found it hard to gauge effective range and impact.