There are 50 achievements with a total of 1000 points.

Marcus, It's Your Father 5
Story Progression in Prologue (Standard or Arcade).

Swimmin' in Glowie Gravy 10
Story Progression in Act 1 Chapter 2 (Standard or Arcade)
.
We Struck Gold, Son! 10
Story Progression in Act 1 Chapter 3 (Standard or Arcade).

My Turf! Cougars Territory! 10
Story Progression in Act 1 Chapter 5 (Standard or Arcade).

Putting it Scientifically… 10
Story Progression in Act 1 Chapter 6 (Standard or Arcade).

Okay, Now We Find Hoffman 10
Story Progression in Act 2 Chapter 1 (Standard or Arcade).

Oh Yeah, It's Pirate Time 10
Story Progression in Act 2 Chapter 5 (Standard or Arcade).

Thanks For Flying GasBag Airways 10
Story Progression in Act 2 Chapter 7 (Standard or Arcade).

Anvil Gate's Last Resort
Story Progression in Act 3 Chapter 1 (Standard or Arcade).

Was it Good For You? 10
Story Progression in Act 3 Chapter 2 (Standard or Arcade).

Lost Your Good Driver Discount 10
Story Progression in Act 3 Chapter 3 (Standard or Arcade).

Brothers to the End 10
Story Progression in Act 3 Chapter 5 (Standard or Arcade).

Think You Can Handle That? 10
Story Progression in Act 4 Chapter 3 (Standard or Arcade).

Baird's Favorite Kind of Toy 10
Story Progression in Act 4 Chapter 5 (Standard or Arcade).

Welcome To -redacted- 10
Story Progression in Act 4 Chapter 6 (Standard or Arcade).

Look at That, Instant Summer. 10
Story Progression in Act 5 Chapter 2 (Standard or Arcade).

Ok. Faith. Yeah. Got It. 10
Story Progression in Act 5 Chapter 5 (Standard or Arcade).

You're Dead! Now Stay Dead! 10
Story Progression in Act 5 Chapter 6 (Standard or Arcade)
.
Ready for More 50
Complete all campaign Acts on Casual or Normal Difficulty (Standard or Arcade).

Ain't My First Rodeo 50
Complete all campaign Acts on Hardcore Difficulty (Standard or Arcade).

That's Just Crazy 75
Complete all campaign Acts on Insane Difficulty (Standard or Arcade).

Collector 5
Recover 5 Campaign Collectibles (any difficulty, Standard or Arcade).

Pack Rat 10
Recover 20 Campaign Collectibles (any difficulty, Standard or Arcade).

Hoarder 15
Recover all 42 Campaign Collectibles (any difficulty, Standard or Arcade).

Remember the Fallen 15
Recover all 15 COG Tags during the Campaign (any difficulty, Standard or Arcade).

My Fellow Gears 50
Complete all Campaign Acts in Co-op (any difficulty, Standard or Arcade).
We Few, We Happy Few... 50
Complete all Campaign Acts in 4 player Co-op (any difficulty, Standard or Arcade).

Level 5 5
Reach level 5.

Level 10 10
Reach level 10.

Level 15 15
Reach level 15.

Level 25 25
Reach level 25.

Level 50 50
Reach level 50.

Judge, Jury and Executioner 10
Get a kill with every possible execution finishing move (any mode).

Wreaking Locust Vengence 10
Get a kill with every Locust monster in Beast mode (any difficulty).

Enriched and Fortified 10
Complete all 50 waves of Horde mode (any difficulty, any map).

It's All About the Loot! 25
Earn the Bronze "Loot Courtesan" medal.

All for One, One for All 10
Earn the Bronze "Force Multiplier" medal.

First Among Equals 25
Earn the Silver "Number 1" medal.

Award Winning Tactics 25
Earn at least one Onyx medal.

Seriously 3.0 100
Reach level 100 and earn every Onyx medal.

Welcome to Versus 10
Kill 10 enemies in Team Deathmatch (Standard or Casual).

The Versus Sampler Platter 10
Complete one match of all six Versus game modes (Standard or Casual).

Welcome to Horde Mode 10
Survive the first 10 waves of Horde mode (any difficulty, any map).

Welcome to Beast Mode 10
Survive all 12 waves of Beast mode (any difficulty, any map).

Welcome to Arcade Mode 10
Complete 5 Arcade Campaign chapters in co-op (any difficulty).

Welcome to the Big Leagues 0
Demonstrate your skill in Casual Versus multiplayer.

Wait, What Time is it? 10
Earn the maximum Consecutive Match Bonus in Versus multiplayer (Standard or Casual).

Lambency 50
Execute an Epic employee, or someone who already has Lambency, in Versus multiplayer (any mode).

Socialite 70
Earn the Onyx "War Supporter" medal.

Secret Achievements

Respect for the Dead 5
Your respect for the dead earned you access to Griffin's special weapons stash.

All participants in this Achievement Challenge understand that 360Voice has no control over the content, quality, or reliability of the GoW3 game and Xbox Live service.

$10,000 in total will be awarded to certain participants, detailed below—however, this is still a Community Event and participants are expected to treat this Achievement Challenge accordingly.


1. HERE'S HOW IT WORKS: Visit http://www.360voice.com/gears/ to participate in the 360Voice GoW3 Achievement Challenge (you are probably already here). You will need to have a 360Voice Full membership (registration is free) and an Xbox Live membership (Silver or Gold) to participate. Players will either create or join a Brotherhood (group) to participate in the Challenge. There is a maximum of 40 participants (Cogs), including the creator (Head Cog), in any Brotherhood. A participant may only be a member of 1 Brotherhood at any time.


The Challenge begins at midnight (PST) on September 20, 2011 and ends at midnight (PST) October 20, 2011. Last date to join the challenge is October 7. Last date to switch Brotherhoods is October 10. If the GoW3 release is delayed by Microsoft, we will adjust the duration of the contest and update participants via www.360voice.com. At the conclusion of the challenge:


i) all surviving members of the Top 2 highest ranking Brotherhoods
and


ii) the 3 Challenge participants who recruited the most other participants (regardless of Brotherhood membership or ranking)
will receive cash prizes in the form of Visa gift cards or Paypal payments.


The accumulated gamerscore (unlocked achievements in GoW3) for all surviving members of a Brotherhood will determine the Brotherhood’s overall score and place in the Challenge ranking. The Brotherhood Leaderboard is publicly available at http://www.360voice.com/gears/


Each individual participant earns 3 points for every Xbox Live Gold player s/he recruits and 1 point for every Xbox Live Silver player s/he recruits. Each recruited Gold participant must have at least 1 point of GoW3 gamerscore to be counted as a valid recruit. Each recruited Silver participant must have at least 50 points of GoW3 gamerscore to be counted as a successful recruit. Individuals earn recruiting points regardless of their Brotherhood’s rank. The Recruiting Leaderboard is publicly available at http://www.360voice.com/gears/


Brotherhoods may be set as Open or Private by the Brotherhood’s Head Cog (initially, the creator). An Open Brotherhood is available for any registered user to join; Private Brotherhoods require an invitation code. If the Head Cog leaves the Brotherhood, Head Cog powers transfer to longest standing Brotherhood member who then immediately becomes the new Head Cog; alternatively a Head Cog can email <support@360voice.com> and request to transfer his/her Head Cog powers to another Brotherhood member.


If player earns GoW3 gamerscore with a valid Xbox Live membership before becoming a Challenge participant (ie: player joins Challenge after September 20), then when same player does join a Brotherhood and becomes a Challenge participant, all of his/her accumulated GoW3 gamerscore will accrue to whatever Brotherhood s/he joins.



2. PRIZING:
$ 5,500
First Place Brotherhood
Divided by # of Cogs in the First Place Brotherhood; ex: $138/Cog in a 40 Cog Brotherhood

$ 500
Top 5 Scorers in First Place Brotherhood
Divided by # of Cogs with the Top 5 scores in the First Place Brotherhood; ex: if 2 Cogs tie for highest score, Cogs 1 through 6 would receive $83

$ 3,000
Second Place Brotherhood
Divided by # of Cogs in the Second Place Brotherhood; ex: $75/Cog in a 40 Cog Brotherhood

$ 500
Top 5 Scorers in Second Place Brotherhood
Divided by # of Cogs with the Top 5 scores in the Second Place Brotherhood; ex: if 2 Cogs tie for highest score, Cogs 1 through 6 would receive $83

$ 250
#1 Individual Recruiter

$ 150
#2 Individual Recruiter

$ 100
#3 Individual Recruiter


$10,000 in total prizes


if u lazy to read, it just basically the team with higher achivement point in the end of the competition, wins the money..

come and join us!

http://360voice.gamerdna.com/group/2119

as referral pls put - iguanadude626
if he wins the top recruiter, we all can 'pow' him.. hehehe