Achievements

This may sounds like stupid question but how many gamerscore can be earned offline?
Thanks for any help or information anyone can offer!

I think this is all of them, I’m sure other eagle eyed forum users will spot any mistakes I’ve made.

Campaign Difficulty

A Monument to All Your Sins
Completed every mission in Halo: Reach alone, on Legendary.
150

Gods Must Be Strong
Completed the Campaign on Legendary difficulty.
125

Folks Need Heroes…
Completed the Campaign on Heroic difficulty.
50

The Soldier We Needed You To Be
Completed the Campaign on Normal difficulty.
25

Campaign Completion
Send Me Out…with a Bang
Completed the 10th mission on Normal or harder.
10

This is Not Your Grave…
Completed the 9th mission on Normal or harder.
10

Dust and Echoes
Completed the 8th mission on Normal or harder.
10

Into the Howling Dark
Completed the 7th mission on Normal or harder.
10

You Flew Pretty Good
Completed the 6th mission on Normal or harder.
10

To War
Completed the 5th mission on Normal or harder.
10

I Need a Weapon
Completed the 4th mission on Normal or harder.
10

Protocol Dictates Action
Completed the 3rd mission on Normal or harder.
10

We’re Just Getting Started
Completed the 2nd mission on Normal or harder.
10

Other Campaign Stuff

KEEP IT CLEAN
Killed 7 Moa during the 2nd mission of the Campaign.
5

They’ve Always Been Faster
Cleared the 2nd mission without setting foot in a drivable vehicle.
25

Two Corpses in One Grave
Killed 2 vehicles at once with the Target Locator in the 3rd mission.
25

Your Heresy Will Stay Your Feet
Killed the Elite Zealot before he escaped during the 5th mission.
25

Wake Up, Buttercup
Destroyed the Corvette’s engines & escort in under 3 minutes in the 6th mission on Heroic or harder.
25

I Didn’t Train to Be a Pilot
Killed 3 of the anti-aircraft batteries during the 8th mission.
10

Tank Beats Everything
Finished the 9th mission on Legendary with the Scorpion intact.
25

Banshees, Fast and Low
Hijacked a Banshee during the Reach Campaign.
25

Swap Meet
Traded weapons with an AI ally in Campaign.
10

Firefight Fun

Heat in the Pipe
Scored 1,000,000 points in a Firefight game.
75

Blaze of Glory
Scored 200,000 points in a Firefight game.
25

Firestarter
Scored 50,000 points in a Firefight game.
10

Game, Set, Match
Completed a Firefight set on Legendary without dying.
25

Crowd Control
Earned a Killionaire medal in Firefight.
10

Other Randomness
Lucky Me
Earned a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.
25

If They Came to Hear Me Beg
Perform an Assassination against an Elite to survive a fall that would’ve been fatal.
25

An Honor Serving
Reach the rank of Captain in the UNSC.
25

The Start of Something
Reached the rank of Corporal in the UNSC.
15

That’s a Knife
Performed an Assassination on an enemy.
10

I See You Favor a .45
Killed 10 enemies in a Firefight or Campaign session with the M6G pistol.
10

An Elegant Weapon…
Killed 10 enemies in a Firefight or Campaign session with the DMR.
10

A Spoonful of Blamite
Killed 10 enemies in Firefight or Campaign with a supercombine explosion without dying.
10

Make it Drizzle
Purchased an item from the Armory.
10

Make It Rain
Purchase an item from the Armory that requires the rank of Lt. Colonel.
10

Lemme Upgrade Ya
Advanced a Commendation to a Silver state.
10

Doctor, Doctor
Used a Health Pack to replenish life after taking body damage.
5

Basically, any of the achievements that doesn’t involve online multiplayer matchmaking.

Jim, wouldn’t it have been easier to post the Achievements that are NOT available offline?

^^;