I have created some Achievements for CEA: Multiplayer which would be quite good for the Finished product.
-Who Needs Passengers? (30G) - Spatter an enemy while your in a Falcon on MM.
-For The File Share (10G) - Earn a Perfection In MM.
-I wont…Miss (5G) - Earn a Laser spree in MM.
-Thats what friends are are for (10G) - On Installation 04, Earn a Road Rage Medal while a Marine is on a Turret.
What are your Achievements?
Discuss…
> I have created some Achievements for CEA: Multiplayer which would be quite good for the Finished product.
>
>
> -Who Needs Passengers? (30G) - Spatter an enemy while your in a Falcon on MM.
>
> -For The File Share (10G) - Earn a Perfection In MM.
>
> -I wont…Miss (5G) - Earn a Laser spree in MM.
>
> -Thats what friends are are for (10G) - On Installation 04, Earn a Road Rage Medal while a Marine is on a Turret.
>
>
> What are your Achievements?
>
> Discuss…
These are better than the others I’ve seen, though they did do the Perfection Achievement in H3. But if I were to suggest anything it would be Achievements that highlight the new anniversary gameplay. Like something with the 3 shot kill with Magnum or Sticking someone in AL.
Big, Yellow…Thing Ready! (5gs) Get 5 kills with the Fuel Rod Gun in a single match.
^^^ Intentional Garbage Joke, just watch the entire community flood the BTB playlist and choose Spire.
I Missed You, My Love (15gs) Win a match in the Anniversary Playlist using only the Magnum.
The Escapist (20gs) - Win a match on Prisoner in less than X amount of time (don’t know about match times on Prisoner)
As If I Were a God (20gs) - Have a successful flag run from the enemy base without killing anyone or dropping the flag.
Happy Camper (25gs) - Get a Killing Spree without moving. (all of the kills, not just the final, fifth kill)
Puma Tamer (10g) - Get a Wheelman and Splatter Spree in the same warthog in a single match.
Hold This, Would You? (5gs) - Give your backup heavy weapons. (For Firefight on Installation 04)
> > I have created some Achievements for CEA: Multiplayer which would be quite good for the Finished product.
> >
> >
> > -Who Needs Passengers? (30G) - Spatter an enemy while your in a Falcon on MM.
> >
> > -For The File Share (10G) - Earn a Perfection In MM.
> >
> > -I wont…Miss (5G) - Earn a Laser spree in MM.
> >
> > -Thats what friends are are for (10G) - On Installation 04, Earn a Road Rage Medal while a Marine is on a Turret.
> >
> >
> > What are your Achievements?
> >
> > Discuss…
>
> These are better than the others I’ve seen, though they did do the Perfection Achievement in H3. But if I were to suggest anything it would be Achievements that highlight the new anniversary gameplay. Like something with the 3 shot kill with Magnum or Sticking someone in AL.
True that.
I think Reach should add another 350 GS and CEA to have it’s own 1000. Because CEA multiplayer is basically Reach and the Reach cheevos aren’t tapped out yet.
So for the 350 GS I’d say their should be map specific achievements on each map.
(25G) Over the Hills… - Snipe an enemy from base to base on Timberland.
(35G) disGUASSting - Get 10 wheelmans in the guass hog on Headlong in one game.
(30G) Beaver Bully - Get a kill while overshielded with Rockets on Battle Creek.
(30G) Forge Em! - Save a map built on Hang em’ High.
(35G) Prison Bash - Get 3 beatdowns in one game on Prisoner.
(30G) Blast you to Hell! - Get 3 kills with the Rocket Launcher on Damnation in one game.
(25G) Still a jerk… - Drive at least 1 NCP off the cliff on Installation 04.
(50G) Classic! - Play every CEA map in it’s classic form.
(50G) Combat Evolved - Use an armor ability on each of the CEA maps.
(40G) Happy Anniverary! - Play 10 hours worth of online multiplayer on CEA maps.
Please, no more laser achievements, by the way the laser only has four shots now so laser spree is next to impossible.
All The Help You Need - (15 G**)** Have as many AI teammates active, allowed at one time during firefight matchmaking on Installation 04
> I think Reach should add another 350 GS and CEA to have it’s own 1000. Because CEA multiplayer is basically Reach and the Reach cheevos aren’t tapped out yet.
>
> So for the 350 GS I’d say their should be map specific achievements on each map.
>
> (25G) Over the Hills… - Snipe an enemy from base to base on Timberland.
> (35G) disGUASSting - Get 10 wheelmans in the guass hog on Headlong in one game.
> (30G) Beaver Bully - Get a kill while overshielded with Rockets on Battle Creek.
> (30G) Forge Em! - Save a map built on Hang em’ High.
> (35G) Prison Bash - Get 3 beatdowns in one game on Prisoner.
> (30G) Blast you to Hell! - Get 3 kills with the Rocket Launcher on Damnation in one game.
> (25G) Still a jerk… - Drive at least 1 NCP off the cliff on Installation 04.
> (50G) Classic! - Play every CEA map in it’s classic form.
> (50G) Combat Evolved - Use an armor ability on each of the CEA maps.
> (40G) Happy Anniverary! - Play 10 hours worth of online multiplayer on CEA maps.
I AM ALL FOR THIS!!! this is all we need 
15GS- Quit Chuckin My Wood
Get a gernade spree on timberland.
30GS- Running the Riot
Earn a Running Riot on Prisoner
25GS- Shoulders, Knees and Toes
Go through a game on headlong without getting a single headshot, but using a persicion weapon the entire game.
15GS- The Weight of Your Herecy…
Get a triple kill on Damnation using an Alien Weapon
15GS- For a Rock, He Flew Pretty Good
Earn a Wheelman Spree on any CEA multiplayer map
15GS: Death Row
Earn a sniper spree on prisoner
20GS: I think we hit something…
Earn a splatter spree on Breakneck
15GS: Sneaky Beaver
Capture a flag on Beaver Creek
10GS: Let them come
On installation 04 earn an invincible
20GS: Here comes the Lumberjack
Earn a running riot on Timberlands
These aren’t Multiplayer but I started thinking of them and decided to post anyways.
10G - No Thanks to Your Driving…
Beat the Pillar of Autumn on Normal, Heroic or Legendary
10G - Not a Natural Formation
Beat Halo on Normal, Heroic or Legendary
10G - Ain’t Payin’ Us By the Hour
Beat Truth and Reconciliation on Normal, Heroic or Legendary
10G - You Know Our Motto…
Beat The Silent Cartography on Normal, Heroic or Legendary
10G - This Ring Isn’t a Cudgel…
Beat Assault on the Control Room on Normal, Heroic or Legendary
10G - You Always Got a Bad Feeling About Something…
Beat 343 Guilty Spark on Normal, Heroic or Legendary
10G - They Would Consume All
Beat The Library on Normal, Heroic or Legendary
10G - I Shall Purge You at Once!
Beat Two Betrayals on Normal, Heroic or Legendary
10G - No Human Life-signs Detected…
Beat Keyes on Normal, Heroic or Legendary
10G - You Did That On Purpose
Beat The Maw on Normal, Heroic or Legendary
25G - Punch It!
Completed the Campaign on Normal difficulty
50G - It’s Finished
Completed the Campaign on Heroic difficulty
125G - We’re Just Getting Started
Completed the Campaign on Legendary difficulty
150G - This is it, Baby. Hold Me
Completed every mission in Halo: CEA alone, on Legendary
It’s Good To Be Back (5G) - Switch to classic mode as soon as the first mission starts.
Three Shots, You’re Dead (10G) - Kill 10 enemies with the magnum.
That’s all I can think of, really lol. I haven’t played the campaign, but I will soon. 
Here’s Some:
(77G) Remember the Maker: Get 77 kills the week of 7/7
(117G) How Chief Would’ve Wanted It: Clear any campaign mission (LASO) and at least 100 with out dieing
(33G) Just Like Nobel Six: Become a hyper-lethal-vector by clearing any campaign mission using only head-shots
(15G) There Ain’t No “I” In Team: Find an audio file that mentions 343i with a friend
-No, I think we’re just getting started (343G).
Description: Beat the whole campaign on Legendary (Classic Mode).
The reason why Classic Mode must be a must have for this achievement, is so people would want to try the campaign again with skulls on.
Here’s a few more:
(15G) Lovers: Assassinate an enemy that has Heart Attack enabled
(20G) Haters: Assassinate an enemy that has Inclement Weather enabled
(20G) Back-Staber: Assassinate 100 enemies in matchmaking or campaign (combo’s of kills in MM and Camp. count)
(50G) Assassin: Assassinate 300 enemies in matchmaking or campaign (combo’s of kills in MM and Camp. count)
(75G) Hitman: Assassinate 500 enemies in matchmaking or campaign (combo’s of kills in MM and Camp. count)
(25G) Preferred Assassination: Perform all assassination types in the game
(15G) You Stick-O: Get 10 sticky grenade kills
“Remember… No Lockin’” (15g): Go a full game of in Vanilla Reach Team Slayer without Armor Lock.
XD
Knowing how they usually do things they will have achievements for completing each campaign mission and then completing the campaign on normal,heroic and legendary. Since The classic maps are going to be running off Reach’s server they will have seperate achievements,but the way Reach’s achievements have been done they will be easy to medium difficulty and not map specific.
Here is my list:
Welcome back, old friend! (15G): Kill 7 enemies with the Halo: CE magnum without dying in matchmaking.
Keeping it clean [working title] (10g): Force a player out of Armor Lock by dealing continuous damage in matchmaking.
> “Remember… No Lockin’” (15g): Go a full game of in Vanilla Reach Team Slayer without Armor Lock.
>
> XD
THIS
X)
Mmmm Nostalgia… 50G: Staked a team at least once on each of the new maps.
Sorry son i don’t keep it loaded…:50G: Earn a killing frenzy with an old friend.
Timber!!!:70G Earn a Road Rage on Timberlands
Perfection Evolved:100G: Earn a perfection on a remade map.
World Tour:30G Play on each of the new maps.
Prison break!: 60G: Earn a Running Riot on Prisoner