Hmm. Pretty boring, sadly. And pause is broken, especially in relation to the fire upgrade. Fire-infected things will get DOT while the game is paused or so it appears. Too long between upgrades in story mode.
Noticed a bug that only cropped up once so far, since recent changes. The tunnel ahead of me seemed to change from one obstacle to another, when I got closer. Was near the start at relatively low speed. Still an awesome game, I love seeing it change subtly as time goes on.
Never seen such sloppy basic controls. This game is just a rehash of every random flash platformer mechanic I've seen, executed less well than things that have come before it. Boring, too easy, unattractive. 2/5.
Noticed two weird things xD. If you do a 360 degree turn, the red wall of death appears in front of you, in the normal direction of travel. Also, I had bits from another tunnel (apparently?) overlapping into the tunnel I was actually flying through. Only happened once though.