Here is the full list of all 36 Reforger achievements.
You have completed Stage 'Tutorial 2. Make a living'.
You have completed Stage 'Tutorial 1. The Beginning of the Problem'.
Equip all 4 bows within 1 minute of starting the game.
Hit all enemies with a volley on Normal Difficulty.
Assigning more workers than the mills capacity.
Complete a stage without losing more than two units on Normal Difficulty.
You have completed Stage 'Tutorial 3. Some kind of Cheating'.
Buying or selling resources or items in a Market.
Recover 10 units in the Hospital on Normal Difficulty.
You have completed Stage 'Capital Defense 1. The Beginning of the Problem'.
You have completed Quest 'Shiny Components'.
Destroy both Orc Camps in 8 minutes on Normal Difficulty.
You have completed Stage 'Capital Defense 2. Power fight'.
Send a worker to a coal mine in 1 minute.
Destroy the orc camp before the orcs of the optional objective depart on Normal Difficulty.
You have completed Stage 'Capital Defense 3. Suppressive fire'.
Equip all parts of a Ranger to a higher tier.
You have completed a Stage in 12 minutes on Normal Difficulty.
You have completed Stage 'Between Mana and Cheat 1. Altar of Sorcerer'.
At the same time, three squads are on the move.
Complete a Stage without crafting any ranger item on Normal Difficulty.
You have completed Stage 'Between Mana and Cheat 2. Fire warfare'.
Consumes 20 Mana Rechargers.
Destroy the enemy camp to complete the stage on Normal Difficulty.
You have completed Stage 'Between Mana and Cheat 3. Mother of gunpowder'.
Apply Fog Storm, Hallucination Storm, and Tranquilizer to a single enemy unit.
Complete both optional objectives on Normal Difficulty.
You have completed Stage 'Seeker 1. Pray'.
Completed all quests.
Destroy east Orc Camp in 10 minutes on Normal Difficulty.
You have completed a Stage 'Seeker 2. Seekers of the Deep Mountains'.
Equip all parts of a Healer to a higher tier.
Complete a Stage without crafting any shieldman item on Normal Difficulty.
You have completed Stage 'Seeker 3. Put the cart before the horse'.
Complete the stage without using the First Aid Tent.
Complete all 5 optional objectives on Normal Difficulty.