Here is the full list of all 47 Phoenix Point: Year One Edition achievements.
Recruit a soldier of each class (don't have to be in the same game)
Kill a mindfragger with overwatch when it is jumping on someone's face
Trade for 10000 total resources
Build a facility of each type
Scrap items worth 10000 total resources
Kill 500 Pandorans (does not have to be in same game)
Reach allied reputation with a faction
Fully build up a base
Destroy Pandoran citadel
Kill a Siren when she has someone under mind control
Kill 3 enemies in a single turn, with a single soldier, without explosives
Reach aligned reputation with a faction
Max out the base stats of a soldier
Raid haven zone facility
Evacuate a soldier who is bleeding
Retrieve all resources from a scavenging mission
Control 4 phoenix bases
Destroy Pandoran lair
Steal an aircraft
Manufacture an air vehicle
Steal a research
Reach friendly reputation with a faction
Sabotage haven zone facility
Destroy Pandoran nest
Cause an enemy to fall to its death
Recruit a soldier
Build a base facility
Beat a haven defense mission with no civilian deaths or no structural damage
Complete a scan
Complete the tutorial
Manufacture an item
Deal with the Pandoran threat at any difficulty level
Beat the game without allying with any faction
Deal with the Pandoran threat at hero difficulty level
Deal with the Pandoran threat at legend difficulty level
Complete all different game endings
Capture each type of Pandoran (don't have to be in the same game)
Manufacture an item of each type (don't have to be in the same game)
Survive an ambush mission
Complete all phoenix research projects
Complete all research projects of one faction
Complete Scylla Vivisection
Complete all research projects (don't have to be in the same game)
Obtain solders of each dual class combination (don't have to be in the same game)
Mind control 3 enemies at the same time with the same priest
Use every character skill (don't have to be in the same game)
Reach allied reputation with all factions (don't have to be in the same game)