This is a great handheld title. So far enjoying it but I suck at it. I'm glad to see ANY on-rails shooter though. Game is a bit faster paced than I seem to recall any of these titles, with little room to dodge some shots (again, I do suck at this).
You can have all the classic star fox stuff: barrel rolls (which I only discovered on the 2nd stage), shooting, lock-on shots, bombs, etc.
I actually like the bosses so far. Some neat designs and intuitive patterns to dodge. The level design is good, though most of your regular enemies are nothing to write home about. You do have a mix between shooting enemies and having to dodge environmental stuff.
This game does have a speed up and slow down mechanic. Did star fox ever have that? I don't remember.