SAM reset question

I want to do a complete reset and redo all the achievements again. I heard some of the achievements like Rank ones and maybe some more are serversided so.. is it safe if I redo my achievements with private profile? and even if later someone will report me later cuz many hours and just few achievements? Can devs somehow check if I did the reset or not?

The only way to know is to try, however you should be safe anyway.

None of the achievements are incapable of being removed. However to remove certain ones it would require you to use a new save as your previous save will unlock rank specific achievements immediately. Thorough editting with SAM will allow you to remove almost all achievements, just be sure to change statistics also to reflect what achievements you remove.