For the 10 second wheelie achievement on the moon: use Spoke and just stand still doing the wheelie at the start line. If you can't get it within ~25 seconds, just hit restart.
Pretty well-made, but my only complaint is how twitchy the controls are. That makes stuff like level 40 a massive pain. 922 so far, haven't completed 38 or 40 yet.
I like how people are saying that this game isn't "that hard" because there's a game or two that's harder than this. So only the hardest game or two counts as "that hard?" Jesus.