ModNation Racers

[baiocchij]

Greetings!

I'm brand-spanking new to ModNation Racers (bought it Saturday, 3 days ago).  I've only raced 5 courses on the career mode.  I've gone back to try and unlock some of the other achievements, for example, I know the 2nd race (with the sheep on the farmland) has one goal of having 30000 drifting points and finishing first, and the other one is 3000 drafting points and finishing first.  I know for a fact I achieved the 30000 drifting points and finishing first, but it did not unlock the achievement for me.  However, I did have to go back several of times to do so.  Are these locked achievements all-or-nothing on the first go, or is something wrong here and I'm not getting my achievements as I appropriately perform them?

Thanks for your help!

[moriarty1975]

Don't take his the wrong way but if it says you haven't completed the required tasks to complete the challenge then you haven't completed the required tasks to complete the challenge.