Full list of all 55 Operation Flashpoint: Red River (GFWL) achievements worth 1,125 gamerscore.
The base game contains 50 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 5 achievements worth 125 Gamerscore.
You completed Act 3 of the campaign
You completed End Of The Beginning
You discovered what Knox's Rule #3 is
You destroyed an enemy vehicle with the FGM-148 Anti Tank Weapon
You completed Vantage Point
You completed a mission as the Grenadier
You completed 1st & 10, Let’s Do It Again
You completed a mission as the Auto Rifleman
Short, controlled bursts
Keep the enemy suppressed
You completed Act 2 of the campaign
You completed Line In The Sand
Keep a full mag
Orders
You completed Careful What You Wish For...
You maxed out one core soldier skill
You completed a mission as the Scout
You completed The Wrong Way
You destroyed an enemy aircraft with an anti aircraft weapon
You drove a humvee
If in doubt, fall back
You killed your first PLA soldier in Red River campaign
Don't get shot
You completed Almost Too Easy
You completed Act 1 of the campaign
You called in Combat Support within 300m of your location
You completed The Human Terrain
You picked up an enemy AK
Beware of confined spaces
You completed Meet The Neighbors
Patch your wounds
You customized a weapon
You completed Welcome To Tajikistan
You completed a mission as the Rifleman
Complete one of the Combat Sweep FTE maps
Complete one of the Last Stand FTE maps
Complete one of the CSAR FTE maps
Complete one of the Rolling Thunder FTE maps
Complete and survive a Combat Sweep mission having killed all enemies and destroyed all caches
Complete a Last Stand mission to stage 4, wave 4 and escape alive
Complete and survive CSAR mode, rescuing both pilots
Complete and survive a Rolling Thunder mission with the entire convoy surviving
Max out three core soldier skills
Max out all core soldier skills
Obtain the highest level for one character class
Obtain the highest level for two character classes
Obtain the highest level for all character classes
Play Red River with three other friends
Heal a development team member or someone who already has this achievement
Obtain a Gold rating on all VOD FTE maps
Complete a VOD Rolling Thunder map without the convoy ever stopping
Complete a VOD Last Stand map with over 1 million points
Find the pilots & destroy the chopper in under 5 minutes on a VOD CSAR map
Destroy an enemy tank with C4 on any of the VOD maps