pictures for the list in case you're interested.
MyGamercard.net got their hands on the Achievement list for Crash of the Titans (which explains the slightly jumbled headline) today. The list seems to point at completing various tasks throughout the story, with some extra stuff thrown in for beating the game on the Hard difficulty and earning Gold Idols on all the levels on hard. Hopefully the Achievements will be retroactive so those who want to tackle those can get the other ones at the same time. There are also 5 secret Achievements which account for 75 Gamerscore. In total there are 47 Achievements for the standard 1000 Gamerscore.