Here is the full list of all 30 Warhammer 40,000: Battlesector achievements.
Complete any campaign mission using only melee
Complete the Age of Crimson Dawn campaign
Complete Act Two
Sacrifice all Death Company units at Wind River Canyon
Clear Kemrender of infestation nodes
Kill a Genestealer
Unlock an Adepta Sororitas unit
Unlock a Tier 5 node in a tech tree
Collect Gallians staff
Kill a Trygon with a pistol
Recruit a Baal Predator
Complete Act One
Recruit a Furioso Dreadnought
Kill an enemy unit with a grenade
Unlock a Tier 3 node in a tech tree
Heal an ally
Unlock a Tier 1 node in a tech tree
Unlock a flying unit
Kill a Tyrannofex
Score a critical hit with a chainsword
Kill unit with a flame weapon
Complete the tutorial
Use the fallback command
Score a critical hit with a bolter
Use the interact command
Call in a Stormraven missile strike
Win a skirmish battle against Blood Angels
Kill a Hive Tyrant in a multiplayer game
Kill a Blood Angels Lieutenant in a multiplayer game
Trigger the Volatile ability