That's actually what most of the arcade game achievements are like, in my experience: stuff you would never do during the game, but is weird enough to warrant t

That's actually what most of the arcade game achievements are like, in my experience: stuff you would never do during the game, but is weird enough to warrant the game noticing, like in Geometry Wars, doing a certain (difficult) thing in the game without firing a single shot. One game, Chime, has an achievement just for buying the game. Since all the proceeds go to charity, I guess they felt you deserved a few points for buying it.