- Liquid Metal Black Lancer, Hammerburst, Sawed-Off, Retro-Lancer, Gnasher - Purchase the Gears of War 3 Season Pass
- Liquid Metal White Lancer, Hammerburst, Sawed-Off, Retro-Lancer, Gnasher - Epic employee exclusive
- Liquid Metal Green Lancer, Hammerburst, Sawed-Off, Retro-Lancer, Gnasher - Unknown
Team Insignia Weapon Skins
- Team Insignia Retro Lancer - Get the Bronze Veteran Medal (Play 100 Matches)
- Team Insignia Lancer - Get the Silver Veteran Medal (Play 200 Matches)
- Team Insignia Hammerburst - Get the Gold Veteran Medal (Play 300 Matches)
- Team Insignia Shotgun Set - Get the Onyx Veteran Medal (Play 400 Matches)
Crimson Omen Weapon Skins
- Crimson Omen Lancer - Unlocked with purchase of 12 + 2 XBL Gold Card Promotion
- Crimson Omen Hammerburst - Get 'Welcome to Beast' (Survive all 12 waves of Beast mode)
- Crimson Omen Retro Lancer - Get 'Welcome to Horde' (Survive the first 10 waves of Horde mode)
- Crimson Omen Gnasher - Get 'Welcome to Versus' (Kill 10 enemies in Team Deathmatch)
- Crimson Omen Sawed-Off - Get 'Welcome to Arcade' (Complete 5 Arcade Campaign chapters in co-op
Infected Omen Skins
The following Infected Omen Skins are included with the Gears of War 3 Epic Edition, Limited Edition Console and Limited Edition Controller.
- Infected Omen Lancer
- Infected Omen Hammerburst
- Infected Omen Retro Lancer
- Infected Omen Gnasher
- Infected Omen Sawed-Off
Reach level 100 in Gears of War 3 to unlock the Gold Omen skin (gold with red highlights).
Onyx Weapon Skins
Get 6,000 kills with any of the five starter weapons to unlock the Onyx medal and an Onyx skin for that weapon.
- Onyx Lancer - Get 6000 kills with the Lancer
- Onyx Hammerburst - Get 6000 kills with the Hammerburst
- Onyx Retro Lancer - Get 6000 kills with the Retro Lancer
- etc
Chrome Weapon Skins
Perform the following actions in previous Gears games and to unlock Chrome weapon skins for Gears of War 3.
- Chrome Lancer - Earn the Don't Hate the Player Achievement in Gears 1 (Finish with the highest points in a ranked match)
- Chrome Hammerburst - Earn the Dirty Dirty Horde Achievement in Gears 2 (Survive the first 10 waves of Horde)
- Chrome Retro Lancer - Earn the Domination Achievement in Gears 1 (Complete 10 different co-op chapters as Dominic Santiago on any difficulty)
- Chrome Gnasher - Complete the Gears 1, 2 and 3 campaigns (Any difficulty)
- Chrome Sawed-off - Earn any Achievement in Gears of War for the PC.
Gold Weapon Skins
If you have the Veteran Gear achievement in Gears of War 2 OR if you play Gears 3 online between Sept. 20th and Sept. 27th in Gears 3 you will unlock the following:
- Gold Gnasher
- Gold Double Barrel Shotgun (Don't have Veteran Gear? Unlock it by having the Commando Achievement in Gears 1.)
- Gold Lancer
- Gold Retro Lancer (Alternately complete 90 matches and get 100 kills with the gold Retro Lancer in the Beta)
- Gold Hammerburst
- "Member of The Old Guard" Medal
- Title
Note: Veteran Gear (Gears of War 2) is a Snowblind Map Pack (DLC) Achievement -- Reach level 100 and win a match on each of the 4 Snowblind Map Pack maps (Public only)
Commando (Gears of War) is a regular Achievement in the first game -- Complete all acts on Insane Difficulty
Beta Unlockables (Flaming Skins)
- Flaming Hammerburst - Complete one match by Sunday, April 24
- Flaming Lancer - Complete one match during the week of April 25
- Flaming Sawed-Off Shotgun - Complete one match during the week of May 2
- Flaming Gnasher Shotgun - Complete one match during the week of May 9
- Beta Tester Medal - Complete one match in the Beta
- Thrashball Cole - Complete 50 matches in any game type to unlock for the Beta / To permanently unlock, complete 10 matches as Thrashball Cole during the Beta
- Gold-Plated Retro Lancer - Complete 90 matches in any game type to unlock for the Beta / To permanently unlock, score 100 kills with the Gold-Plated Retro Lancer during the Beta
This website lists them all.
http://epicgames.com...3-weapon-skins/
