Very very cool idea Rick.With it you need a very very cool system build for this...
Im sure it will be great, not now but in the future.Achievments should be advancing through levels.
The Ownzor Lv1 - Score 10 Top1 records.
The Ownzor Lv2 - Score 20 Top1 records.
And might be categorized too.
Like stuff related to DM can be called Racin' Death and the challenge may change through levels.
Like getting killed 10 times in level 1 and getting 10 kills at the next level.Various challenges under one name.KK i didnt like this one much.
It may create a rank system in the future.Calculating with achievments / badges you earn.Call of Duty / Battlefield style.
I agree with notification, we should know it with some visuals.