QUOTE(wasting @ Feb 5 2006, 03:16 AM)

and added to the th gaps that theres 2 i think you have to and can only get at one point in the game and i missed them so I'd have to go all through story mode again.. thats the main reason why i don't want to do it
actually no you don't I thought that too when I read the the game FAQ on gamefaqs but it's not true.
there are 4 gaps at the Skate Rance that are only there if you play that level in story mode. but even if you've completed the game you can just go back in and play the level and they'll be there. They're only not there if you play it in free-skate. (they're really easy gaps too) The hardest gap in the games probably the "NATAS FOUR THE WIN!" gap in the Van's Skatepark... took me hours to get that one.
oh and you wont get the 100% achievement immediately you have to start a new story mode but about 10 seconds after you start playing it will give you the achievement.
if you have any gap questions I'd be happy to help.
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Back on topic: I pretty much finished Marble Blast Ultra today (one thing left to achieve but it should be easy at this point ). It was a really challenging game. I definitely wouldn't call it easy but it's also not impossible.
I'd classify this in the medium to difficult category, it's got a good mix of achievements ranging from easy to hard.
I like the achievements to be like THAW and Marble Blast Ultra. I feel I've played through these games throughly and really done all there is to do while being challenged along the way. I like to be able to complete a game without having to dedicate my life to it *cough*DOA4*cough*