While true that keeping a lot of saves help, it's not like you can actually know beforehand WHEN it pops. It can be after you defeat a hard monster in which case you can't make a save that saves you having to redo the fight, or it could be after you turn a quest in in which you can. Point is, you don't know.
How am I supposed to know when the gwent tournament achivement was supposed to fire? I had a very hard time there and if that achievement fires after the beat down... now, normally I'd just set the game to easy for redoing that, but who knows if THAT is implemented correctly, maybe lowering the difficulty then infects my real save and I don't get the blood & broken bones achievement down the line which would be even worse.
UGH.