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