Was ecstatic that I was finally going to get 100% on a game

Hahahahaha

Poor guy.

I don't have any 100% achievements on a PC game, but I've done it with a few on my 360 like Bioshock and Portal: Still Alive.

lol, wankers.....

I played it during the coal debacle for the achievement, needed to get quite far, but had other achieves to get. So would probably need to start again when I get around to playing it proper.

Batman: AC has date based achievements which I keep forgetting about. There is probably a Google calender thing for it if I looked.

I hate those kind of achievements. :( My most recent 100% game is The Bridge. That game was pretty difficult.

Just change the date on your PC to Christmas.

Same thing happened to me with the Mark of the Ninja. I went 100% and two days later they add more achievements for Special Edition... I went full retard, deleted the game and wowed that I'll never, ever mention it again unless I'm raging.