Game Achievements

Halo 3, Fallout 3 (no DLC achievements), Forza motorsport 2, Lost Planet, Halo ODST, Half life 2/ Team Fortress 2 (aka orange box achievements).

I think these are the only ones, and yes they are all for xbox 360...

EDIT: Forgot to mention portal aswell.

On consoles Achievements usually are just piece of ... gooo.
For example - GTA4:
Off The Boat - finish FIRST mission. It's really great achievement - drive from ship to home.
Driving Mr. Bellic - access to Roman's taxi (also should be done through story)
and so on... A lot of achievements is just "finish mission ..." or "go through campaign storyline ..."

But for some steam games achievements is something impossible - Payday, for example:
Noob herder
Beat any heist on OVERKILL difficulty with three other players who are all using the Noob Lube perk. To complete this challenge, you will have to have played the heist from the start.

I don't have any game with all achieve's. Ot takes a lot of time.

None. Most games will ALWAYS have those few impossible achievements that you won't be able to get unless you grind the game like crazy. I always try to get all the achievements I can, but I never got a 100%

Zero on Steam. I have a couple on Xbox 360, including Just Cause 2, which took forever but was fun. I don't really care about achievements, but sometimes they can be a fun challenge if you want a bit of extra from a game.
I might try to get them all in Skyrim, if I run out of other things to do before modding comes (yeah right)

Zero!

Some.
Audiosurf, Deus Ex:HR, Eversion, Portal 2, Puzzle Agent, Puzzle Agent 2.
Close on TF2, LIMBO, Worms Reloaded, Tidalis.

Alien Swarm, Aquaria, Lara Croft And The Guardian Of Light, Left 4 Dead 2, Puzzle Dimension, Trine and World Of Goo.
I want finish other games, but Portal had 3 achievements that I can't get yet. It's like impossible.
Doing the Hydrophobia and Left 4 Dead achievements.
I love unlock every single achievement on games.

P.S: Sorry for my english.

The misadventures of P.B. Winterbottom, Plants Vs. Zombies, Trine and Binding of Isaac

Not a single one, do not care for achievements.

Two. Except now just one.
123 Kick It... because there's only one achievement.
and Defense Grid... except they added new achievements a few days ago.

Trine and 123 Kick it

I'll do it with HL2 games soon.

No sense to compare - some have three, some have three hundred achievements.

I don't care much for achievements except in games I really really like, I have never got 100% but I got a lot in Bioshock 2, halflife 2, dead rising, Starcraft 2 and some indie games

I have about 5 or 6, hope to get more finished. I'm slowly getting there.