"The Gateway Trilogy" also supports ingame achievements.
They appear (i believe, after finishing the first episode) in the main menu as a "Star" symbol. :-)
The only game with in-game achievements that I can remember is Fallout: New Vegas. They also give in-game bonuses such as "bonus damage", which is way better than usual digital decoration for achievement board (in my opinion).
Thank you. I added both to the list..
I should have mentioned this before, but I couldn't remember that this F:NV in-game achievements are more like challenges: you do certain activities and earn kind of a perk for it, like +5% more damage dealt to creatures if you manage to exterminate enough of them. There are no in-game achievements as a list of those you might earn using a certain platform or a client. So I beg a pardon for misunderstanding, I just recently did refresh my memory by reading a Fallout wiki.