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