Here is the full list of all 45 Idle Master Hunter Steam Edition achievements.
Kill 100000 Monsters
Clear Hero Raid
Rest 250 Times
Gain 999 D
Reach 1 Million Damage With Any Hero
Rest 50 Times In One Day
Reach Lvl 300 With Any Weapon
Reach Lvl 200 With Any Weapon
Clear Fifth Raid
Clear All Raids In 30 Seconds From First To Last
Reach Lvl 100 With Any Weapon
Kill Every Enemy 100 Times
Buy The Best Weapon In Game
Clear Gates of Hell
Reach 100000 Damage With Any Hero
Gain 100 D
Clear Above the Clouds
Reach Lvl 50 With Any Weapon
Rest 25 Times
Clear Fourth Raid
Clear Dark Depths
Reach 10000 Damage With Any Hero
Obtain All Charms On A Hero
Kill 10000 Monsters
Clear Forgotten Dungeon
10 Hours Playtime
Clear Third Raid
Reach Lvl 25 With Any Weapon
Clear Land of Giants
Obtain 10 Charms On A Hero
Reach 1000 Damage With Any Hero
Clear Farhorn Tribe
Clear Second Raid
Gain 1 D
Clear Masquerade
Reach 100 Damage With Any Hero
Clear Unholy Crypt
Recruit 3 Companions
Clear First Raid
Gain 1 E
Kill 1000 Monsters
Clear Mysterious Woods
1 Hour Playtime
Kill 100 Monsters
Gain 1 Gold