Here is the full list of all 36 Infested Planet achievements. It takes around 12-15 hours to unlock all of the achievements on Windows.
Undo 10 mutations at once during the Endgame mission.
Finish the Endgame mission and the campaign.
Finish the Periapsis mission.
Finish Periapsis without losing a bunker.
Finish Tension without losing a crate to the aliens.
Finish the Tension mission.
Finish a random capture mission with the Burrowing Hive mutation.
Finish a random capture mission with the Sharp Spikes mutation.
Kill all hives on a raid map at Terminus difficulty.
Finish the Anabasis mission.
Kill all hives on a raid map at Abyss difficulty.
Finish Memento Mori while holding more than 1 point.
Start a skirmish custom map.
Win a capture map at Abyss difficulty.
Finish a random capture mission with the Clone Strike mutation.
Finish Preparations within 10 minutes.
Kill all hives on a raid map at Ruins difficulty.
Win a capture map at Terminus difficulty.
Finish a random capture mission with the Guardians mutation.
Finish Night and Day in 11 minutes or faster.
Finish Night and Day without losing a point
Kill all hives in the Sudden Strike mission.
Unlock all weapons, tech and buildings in the campaign.
Win a capture map at Ruins difficulty.
Finish the Crow's Neck mission.
Finish the Science Station mission.
Finish the Contact mission.
Finish the Night and Day mission.
Finish the Preparations mission.
Finish the The Return mission.
Finish the Memento Mori mission.
Finish the Warpath mission.
Finish the Arsenal mission.
Finish the Foundations mission.
Finish the Blitzkrieg mission.
Finish the Opening Gambits mission.