Here is the full list of all 36 Reficul achievements.
Complete the tutorial
Reach the camp site
Reach the Witches Woods
Find the Lodge
Find the Old Church
Get to Sapphire Holiday park
Reach the Southern Pass
Reach the Military Base
Get to the Chopper
Kill a demon
Kill 10 dark spirits
Kill 100 Dark Spirits
Kill 500 Dark Spirits
Find Chip`s Pistol
Find Relic - Staff of Light
Find relic - Gospel of Light
Find Relic - Gospel of Eden
Find Relic - Gospel of Ressurection
Find Relic - Rod of Earth
Find Relic - Cross of Light
Survival Complete Round 1
Survival Complete Round 2
Survival Complete Round 3
Complete the game
Surv Tot Kill 100
Surv Tot Kill 200
Surv Tot Kill 500
Surv Tot Kill 1000
Surv Kill 10 Brutes
Surv Kill 30 Brutes
Surv Kill 50 Brutes
Kill 150 Zombies in the Mumbling Dead (Bonus Game)
Kill 500 Zombies in the Mumbling Dead (Bonus Game)
Kill 1000 Zombies in the Mumbling Dead (Bonus Game)
Kill 5000 Zombies in the Mumbling Dead (Bonus Game)
Survive the Mumbling Dead Bonus Game