yeah indeed if you use the ExprofileEditor though it allows you to unlock the achievements you wish in one hit then like drag them around in the gpd to the order that you want so you can do like the level 50 one and then drag a few of the others between that and the level 100 so it looks more realistic. Same result just you can do it in one hit.Back when I indulged in such things, if I came upon an issue like this I would unlock each individual achievement one at a time. I would unlock the achievement for the lowest level, rehash and resign, and then go back online with my profile to sync it with servers. I then repeated that step for each successive achievement. I did not tend to unlock achievements in bulk, because I thought (and still do think) such a method is rushed, silly, and obvious. My way was time-consuming, sure, but I never cared for giving myself exorbitant amounts of gamerscore, anyway.
I never understood the appeal of modding your way to 100,000+ gamerscore. In most cases it looks quite obviously fabricated.
and yeah if you do like 100000g at once you should expect to be reset or banned within a couple weeks. Moderation is the way couple thousand at a time at most