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