Here is the full list of all 35 Masked Forces 2: Mystic Demons achievements.
Kill 400 enemies
Player Level 30
Finish a Night Kill mission
Kill 300 enemies
Finish a Survival mission
Finish Find Artifacts mission (Dead Forest)
Survive the Invasion, Normal difficulty (Dunes)
Kill 200 enemies
Buy all masks
Kill the Skeleton Warlord (Rocky Heights)
Kill the Skeleton Warlord in Hard mode (Rocky Heights)
Kill the Skeleton Warlord in Very Hard mode (Rocky Heights)
Player Level 20
Kill Xarudu (Underworld)
Kill Xarudu in Hard mode (Underworld)
Kill Xarudu in Very Hard mode (Underworld)
Kill 100 enemies
Kill Gargoyle in Hard mode (Dunes)
Kill Gargoyle in Very Hard mode (Dunes)
Kill the Gargoyle (Dunes)
Kill Bone Dragon in Hard mode (Iceland)
Kill Bone Dragon in Very Hard mode (Iceland)
Kill the Bone Dragon (Iceland)
Player Level 10
Reach 50.000$ balance
Win any game
Finish any mission in Hard difficulty
Finish any mission in Very Hard difficulty
Kill 50 enemies
Reach 10.000$ balance
Buy or upgrade a weapon
Collect a gift in main menu
Die :(
Kill one enemy
Change your skin on a weapon