Think I got hit with this pish last night. Was in a match which would have been my 10th win to get that achievement and was about 50 points from getting to level 5.
Played a long tables match as I couldn't work out how to put someone through a table, thought it was finishers fs. Anyways was against a caw, who I was much better than but he seemed to spend a lot of time outside which I used to build up finishers.
Finished the match, and only one cheevo popped, checked and I was at the beginning of level 4 :/
Problem is, it's hard to find game without caws