Not confirmed, but at least it's something.
- Marcus, It's Your Father (5G) You woke up from a bad dream. Story Progression in Act 1 Chapter 1 (Cinematic or Arcade)
- Swimmin' in Glowie Gravy (10 G) Defended the Ravens Nest from Lambent Leviathan. Story Progression in Act 1 Chapter 2 (Cinematic or Arcade)
- We Struck Gold! (10 G) Found food and ammo in Hanover. Story Progression in Act 1 Chapter 3 (Cinematic or Arcade)
- Welcome to Cougar Town (10 G) Defended and escaped from Cougar Stadium. Story Progression in Act 1 Chapter 4 (Cinematic or Arcade
- Big quantum singularity Headshot (10 G) Blew up the Lambent Laviathan from the bridge. Story Progression in Act 1 Chapter 5 (Cinematic or Arcade)
- Where is that? (10 G) Discover the location of Adam Fenix. Story Progression in Act 2 Chapter 6 (Cinematic or Arcade)
- Well We Did Flood Them Out (10 G) Grabbed a Locust Gas Barge to travel to Anvil Gate. Story Progression in Act 3 Chapter 3 (Cinematic or Arcade)
- Thanks For Flying GasBag Airway (10 G) Arrived safely, kinda. Story Progression in Act 3 Chapter 4. (Cinematic or Arcade)
- The *** is Back (10 G) Defeated the Lambent Berserker. Story Progression in Act 3 Chapter 6. (Cinematic or Arcade)
- Good Driver Discount (10 G) Drove from Anvil Gate to Mercy. Story Progression in Act 4 Chapter 2 (Cinematic or Arcade)
- Brothers to the End (10 G) Escaped Mercy. Story Progression in Act 4 Chapter 3 (Cinematic or Arcade)
- Welcome to Griffin Tower (10 G) Found enough fuel to get to Endeavor naval base. Story Progression in Act 4 Chapter 6 (Cinematic or Arcade)
- Baird's Favorite Kind of Top (10 G) Launched the sub. Story Progression in Act 5 Chapter 1 (Cinematic or Arcade)
- That Looks Like the Front Door (10 G) Passed under the Maelstrom and found Azura. Story Progression in Act 5 Chapter 2 (Cinematic or Arcade)
- Look at That, Instant Summer (10 G) Turned off the Maelstrom device. Story Progression in Act 5 Chapter 4 (Cinematic or Arcade)
- Ok. Faith. Yeah. Got It. (10 G) Rescued Adam Fenix from captivity. Story Progression in Act 5 Chapter 5 (Cinematic or Arcade)
- We've Finally Got a Tomorrow (10 G) Saved Sera and killed Myrrah. Story Progression in Act 5 Chapter 6 (Cinematic or Arcade)
- Ready For More (50 G) Completed all campaign Acts on Casual or Normal Difficulty (Cinematic or Arcade)
- Ain't My First Rodeo (50 G) Completed all campaign Acts on Hardcore Difficulty (Cinematic or Arcade)
- Once More Unto the Breach (75 G) Completed all campaign Acts on Insane Difficulty (Cinematic or Arcade)
- Collector (5 G) Recovered 5 of 41 Collectables. [any difficulty, cinematic or arcade]
- Pack Rat (10 G) Recovered 20 of 41 Collectables. [any difficulty, cinematic or arcade]
- Hoarder (15 G) Recovered all 41 Collectables [any difficulty, cinematic or arcade]
- Remembered the Fallen (15 G) Recovered all 15 COG Tags during the Campaign (any difficulty, cinematic, or arcade)
- My Fellow Gears (50 G) Completed all chapters in Co-op on any difficulty (cinematic or arcade)
- A Different Kind of Foursome (75 G) Completed all Acts in 4 Player Co-op on any difficulty (cinematic or arcade)
- It's Called Progress (10 G) Complete a chapter in Arcade campaign with an improved high score.
- Level 5 (5 G) Reached Level 5
- Level 10 (10 G) Reached Level 10
- Level 15 (15 G) Reached Level 15
- Level 25 (25 G) Reached Level 25
- Calling Your Shots (25 G) Completed 10 mini-challenges in Horde (any difficulty)
- First Among Equals (25 G) Was the highest scoring squadmate in 5 chapters of 4-Player Co-op Arcade (any difficulty)
- Don't You Die on Me! (25 G) Reached a x20 team score multiplier in 4-Player Co-op Arcade (any difficulty)
- Award Winning Tactics (25 G) Collected an Onyx Medal
- Seriously 3.0 (100 G) You've done it all! Level 100, campaign on insane, earn every ribbon/medal, complete Horde/Beast on all 10 maps.
- Back to Basic (5 G) Won a match against bots in the Training Grounds.
- Welcome to Versus (10 G) Killed 10 enemies in Team Deathmatch (Ranked or Social)
- Welcome to King of the Hill (10 G) Completed a match of King of the Hill (Ranked or Social)
- Welcome to Team Death Match (10 G) Completed a match of Team Deathmatch (Ranked or Social)
- Welcome to Capture the Leader (10 G) Completed a match of Capture the Leader (Ranked or Social)
- Welcome to Execution (10 G) Completed a match of Execution (Ranked or Social)
- Welcome to Wingman (10 G) Completed a match of Wingman (Ranked or Social)
- Welcome to Warzone (10 G) Completed a match of Warzone (Ranked or Social)
- Welcome to Horde Mode (10 G) Survived the first 10 waves of Horde (any difficulty, any map)
- Welcome to Beast Mode (10 G) Completed the first 12 waves of Beast (any difficulty any map)
- Welcome to Arcade Mode (10 G) Completed 5 Arcade Campaign chapters in Co-Op (any difficulty)
- Rust Lung (50 G) Executed an infected player and is now turning Lambent. (or : Execute an Epic Employee or someone who already has this)
Not really sure what to think about this list, but it looks pretty cool. Every thing up until Seriously 3.0 the medals could be tough to come by, IMO. But until these are confirmed, I thought I would share. When the real ones appear I will post them. If they are the same, consider this list the official list. What do you gamers think?
[Basic]