Oh yeah, beat 4 again, about as solid as I remember other than Drill Man's stage being a little annoying at the falling debris segment. Also, Ring Boomerang was overused in the Cossack/Wily stages, health bars fill up too slowly, and I miss the full control over Rush Jet that you had in 3. Otherwise, it's a really solid game.

In other thoughts, 9 and 10 need rereleases on both 3DS and Wii U eShops. They can be just straight rips of the already-released ones, or they can have in added touchscreen features, and by that I mean the Shovel Knight method of having all your gear on the touchscreen and you can quick-swap it that way. That would be pretty cool, but I'd settle for just straight ports to the eShops.