Here is the full list of all 30 Ironcast achievements.
Upgrade an Ironcast to over 1,250 HP in a single campaign
Complete 100 missions across all campaigns
Deal 100,000 damage across all campaigns
Destroy 100 enemies across all campaigns
Equip a MKIII or higher system on all four slots in a single campaign
Spend 50,000 scrap across all campaigns
Reach Global Unlock level 20
Gain 10,000 War Assets across all campaigns
Keep both Shields and Drives active for 5 turns
Defeat Commandant René Durant
Reach Global Unlock level 10
Complete a Battle mission without taking any damage
Your Ironcast has been destroyed by overheating damage
Equip a systems augmentation in all available slots in a single campaign
Fire your weapons 6 times in one turn
Equip an Ironcast ability in all available slots in a single campaign
Match 20 or more nodes in a single chain
Kill 3 Enemies in one mission
Create a match chain with 4 different types of node
Equip a rare system
Equip a passive augmentation in all available slots in a single campaign
Kill an enemy with a weapon fired on Overdrive
Match 2 Overdrive nodes at the same time
Reach Global Unlock level 30
Reach Global Unlock level 40
Defeat the final threat facing Britain
Match 2,000 nodes in a single campaign
Win a Battle mission without using any defences
Win a Survival mission without attacking any enemy
Win a Battle with less than 5% health left