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.
Finish Memento Mori while holding more than 1 point.
Finish a random capture mission with the Guardians mutation.
Undo 10 mutations at once during the Endgame mission.
Finish a random capture mission with the Burrowing Hive mutation.
Kill all hives on a raid map at Terminus difficulty.
Kill all hives on a raid map at Abyss difficulty.
Finish the Endgame mission and the campaign.
Finish the Periapsis mission.
Finish Periapsis without losing a bunker.
Finish the Tension mission.
Finish Tension without losing a crate to the aliens.
Finish the Anabasis mission.
Finish the Memento Mori mission.
Finish a random capture mission with the Clone Strike mutation.
Kill all hives on a raid map at Ruins difficulty.
Finish Preparations within 10 minutes.
Kill all hives in the Sudden Strike mission.
Finish Night and Day without losing a point
Start a skirmish custom map.
Win a capture map at Terminus difficulty.
Finish a random capture mission with the Sharp Spikes mutation.
Finish Night and Day in 11 minutes or faster.
Finish the The Return mission.
Win a capture map at Abyss difficulty.
Win a capture map at Ruins difficulty.
Finish the Opening Gambits mission.
Finish the Warpath mission.
Finish the Arsenal mission.
Finish the Foundations mission.
Finish the Blitzkrieg mission.
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.
Unlock all weapons, tech and buildings in the campaign.