here is the full achievements list for Gears of War 2  :

(I have typed it myself while reading the achievements in the dashboard  :P)

Around the world again   30 G

Win a multi-player match on each of the 10 shipped maps (any mode )

Variety is spice of death     30 G

Kill an enemy with every weapon in the game (any mode )

Smells like victory    10 G

Kill 30 enemies with an Scorcher flamethrower

Back to basic   10 G

 Successfully complete the five lessons of multi-player training grounds

Artist of war  75 G

Complete the solo campaign  on Hardcore difficulty

Sharpen awe 10 G

Kill 30 enemies at the same time with a heavy mortar

Pack rat   15 G

Recover 20 collectables (any difficulty )

Tourist of duty    25G

Complete the solo campaign on casual difficulty

Guerilla tactician    50 G  

Complete the solo campaign on difficulty

Does this look infected to you ?   10 G

Story progression on act 5 chapter 5

Brumak rodco   10G

Story progression on act 5 chapter 4

You are the support son !    10G

Story progression on act 5 chapter 2

And the horsy you rode on     10G

Story progression on act 5 chapter 1

Have fun storm in the castle   10G

Story progression on act 4 chapter 6

Better wrapped in beacon   10 G

Story progression on act 4 chapter 3

There is a time for us  10G

Story progression on act 4 chapter 2

Water’s  force      10G

Story progression on act 3 chapter 6

Tanks for the memory  10G

 Story progression on act 3 chapter 4

Longitude and attitude   10G

Story progression on act 3 chapter 3

Heartbroken   10G

Story progression on act 2 chapter 6

Free Baird     10G

Story progression on act 2 chapter 5

The sinking feeling     10G

Story progression on act 2 chapter 4

Girl about town    10G

Story progression on act 1 chapter 6

Escort service      10G

Story progression on act 1 chapter 4

Organ grinder  10G

Kill 30 enemies with a cover mulcher   (any mode )

Collector              5G

Recover 5 collectables (any difficulty)

One more feeling  10G

Perform 30 active reloads (any mode)

It is a trap    10G

Story progression on act 1 chapter 2

Green as grass   10G

train rookie Carmine (any difficulty )

Suicide missionary  150G

Complete solo campaign on Insane mode

Completionist   30G

Recover all 41 collectables

One night stand        10G

Complete one chapter in co-op (any difficulty ) Marcus or Dom

Open relationship   30G

Complete 10 chapters in co-op (any difficulty ) Marcus or Dom

Friends with benefits  50G

Complete all acts in co-op (any difficulty ) Marcus or Dom

Crossed swords   10G

Win 10 chainsaw duels (any mode )

Pound of flesh    10G

Use a meat shield to save your life 10 times

Set the spider to the fly   10G

Kill 10 enemies  with a planted grenade 

Crowds control     10G

Melee 10 enemies down with a boom shield equipped

Takes a  licking     30G

Melee 30 Tickers

Take them when they are down     10G

Perform all 11 unique execution on a downed enemy

Seriously 2.0       50G

Kill 100,000 enemies (any mode)

Photojournalist   10G

Submit a spectator photo 

Standing here beside myself    10G

Win 3 matches of wingman (public)

Best meat Flag   10G

Capture 10 Meat Flags in submission (public)

It is good to be the Kane  10G

Win 10 rounds in Guardian match as a leader

You go ahead I’ll be fine  10G

Win 3 matches of King of the hill (public)

The parting gift    20G

Kill 10 enemies while down but not out

Party like it is 1999    30G

Play 1999 rounds of multi-player (any mode )

Dirty , dirty Horde    20G

Survive the first 10 waves of hordes

Hoard the Horde    30G

Survive all 50 waves of hordes

at the end I should say that they are more challenging than previous game

This was announced a couple months ago, so you wasted a small chunk of your time when you could have provided a link.

"This was announced a couple months ago, so you wasted a small chunk of your time when you could have provided a link."

Yep those are some achievements I guess...

"Vinchenzo said:

"This was announced a couple months ago, so you wasted a small chunk of your time when you could have provided a link."

really ??? never knew !!!!"

i would say that those are significantly easier if you ask me

YAY FOR MULTIPLAYER ACHIEVEMENTS!!!

"i would say that those are significantly easier if you ask me
"

"YAY FOR MULTIPLAYER ACHIEVEMENTS!!!

Oh, no...wait...that was wrong.  Excuse my fingers for being as mentally retarded as that achievements list.

Oh, and I'm so glad you typed them while looking at the dashboard.  How's all that online action working out for you?  =  /

"