I love the feature that Crackdown 2 threw into the demo, not only does it make my achievement whore within me happy, but it also increases the playtime that I'll be spending with the demo (even though I only need one of the achievements left). Hopefully this feature catches on as I'd love to see it in other demos soon.

I agree. Partly because I want to try it out with a game that I'll actually end up buying so I can get the achievements permanently. Not saying the demo sucked, but it just wasn't doin' it for me despite my fondness of the original.

It would be interesting to see how little or how much you could earn in games from other companies. Can you imagine how that would work in a Capcom game? The demo would have to be 5 hours long.

I wish there was a way to disable it or wipe your demo progress (maybe deleting the demo and clearing the 360 cache will do it?). It's nice to be able to do it but I'd like to have the option to then go and earn them for real in the full game.