Here is the full list of all 76 Iron Marines achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
Help Sandro unlocks his cowabungous inner self.
Win Spec Op 'The Last of Them' in less than 7 minutes.
Help the squad of funny penguins achieve maximum coolness on stage 15.
Complete Mission 7 without losing any Squads.
Destroy the Fell Bishop's cocoon in less than 4 minutes.
Complete all Campaign Missions in Impossible difficulty.
Defeat the Fell Tyrant in Impossible difficulty.
Defeat Nexus, the Raad Vanguard Master, in Impossible difficulty.
Defeat Mr: Rob070 in Impossible difficulty.
Defeat 50 tentacles in Mission 13.
Help the frozen, weird-looking alien squirrel get his preferred food on stage 18.
Complete Spec Op Laser Tag with the prototype Dropgun unharmed.
Make the Compactors kill 50 Peripheroids.
Deploy 77 Empyrean squads onto the battlefield.
Destroy 8 Worm Cannons in a single Mission.
Kill a total of 150 Jackbots resurrected by Oculus.
Teleport the five missing Captains scattered in Sagan-1.
Defeat Nexus, the Raad Vanguard Master, in Normal or Veteran difficulty.
Have at least 4 Brawlers active at the same time in Mission 8.
Spend 10000 Credits at the Arsenal.
Save all base colonists in MIssion 5.
Complete Mission 4 only deploying Mechas.
Have the worm throw 5 Holy Hand grenades at the enemies' faces.
Recruit a total of 41 fighters in the Ga’r Warhalls.
Build a total of 149 Towers.
Find the 6 Immensity Stones to awake the awesome Mitten of Tranos.
Destroy a total of 72 Ice Blocks.
Kill a Spammer before it spawns any Inductors.
Have 3 Heroes reach maximum level.
Beat the Spec Op 'The Colour out of Space' having destroyed all Bishop cocoons in the process.
Deploy any Hero to battle 100 times.
Search for the ultimate answer buying 42 different upgrades.
Destroy 30 Raad Portals before any enemy can enter our galaxy through any of them.
Find the 4 mischievous kids lost in the snow on stage 19.
Kill 50 Alpha Fenrirs during a single try of stage 18.
Kill 7000 enemies.
Destroy a total of 46 Raad Carriers.
Complete a Mission with at least one Brawler, one Shellstorm and one Firewalker at the same time.
Have 100 of your Squads die. They will be missed.
Defeat Mr: Rob070 in Normal or Veteran difficulty.
Have 4 Ranger Squads fighting at the same time in a single Mission.
Spend more than 1987 Etherwatts in a single Mission.
Free the cute alien from The Claw's grasp in MIssion 12.
Extract 10000 Etherwatts.
Capture all 3 Core Processor's switches without ever losing any of them in Mission 11.
Help the Doctor travel through the timey wimey stuff in Mission 11.
Earn a total of 5000 Credits.
Attack 1000 times with Rocket Towers.
Kill 343 Peripheroids.
Target to shoot 9 alien jellyfish until they explode.
Help the broken Protocol Droid on Mission 10.
Complete Mission 9 without losing a single Squad, like a miniature giant space hamster could do.
Have a Hero reach max level.
Destroy the same Assembly Center 3 times.
Kill 4000 enemies.
Earn more than 5000 Techpoints.
Defeat the Fell Tyrant in Normal or Veteran difficulty.
Defeat the Fell Bishop in the Spec Op A New Despair in less than 30 seconds.
Beat Spec Op Into Darkness with all survivors.
Kill 17 Etherleeches before they drain your Etherwatts storage.
Teleport all colonists to safety in Spec Op Darkest Hour.
Rain down a total of 100 Dropguns to the battlefield.
Complete the Spec Op In Brightest Day with both Power Cores active.
Save the Ambassadress, save the world!
Wake 21 Grimcrushers from their stone slumber.
Destroy 11 Fell Refineries.
Kill a total of 300 enemies in Emergency Frequency Spec Op.
Kill 20 or more enemies in less than 3 secs.
Help the space monkeys get the secrets of the Monolith in Mission 4.
Extract 1000 Etherwatts.
Kill 500 enemies.
Rescue all 4 wounded soldiers in Mission 3.
Buy any Upgrade from our wonderful selection.
Complete Mission 2 with the COMSAT taking no damage at all.
Complete Mission 1. We knew you could do it.
Click their portrait repeatedly to annoy a Hero during a Mission. They like it!