Miasma Chronicles

For this achievement, I suggest completing all side quests and exploring every area to the max first as you’ll come across these enemies just by playing the game.

However, if you’re missing any check your codex and compare with the list below.

Enemies (43):
Tadpole Skullcrusher
Tadpole Scout
Skullcrusher
Scout
Witch Doctor
Spawn Lord
Gun Master
Gorg the Great
Tragul Ch'ak Kruk
Kruul the Firemaster - return to white castle near once you get to the DRC.
Acid Gun Master - return to white castle near once you get to the DRC.
Lee the Luktar - found at the Sky Whale.
Sapling
Whisperer
Mugger
Longshot
Blaster
Reaver
Caster
Shadow
Red Death - found in proving grounds.
Trooper
Warden
Baller
Tiny
Defragger
Underboss
Diesel Diameds X5
Quendyl Zen
Dick Charlsen
Matt Kain
Greaser
Frog Whisperer
Old Ironsides
Green Fingers
The Triplets
Iron Gloves
Chrome Dome
General XZ-339041 - found at the Breakfast Club.
Speaker
General
Patient Zero - found in the Dying Place.
Ziggy Steel

For this achievement, I suggest completing all side quests and exploring every area to the max first as you’ll come across these enemies just by playing the game.

However, if you’re missing any check your codex and compare with the list below.

Enemies (43):
Tadpole Skullcrusher
Tadpole Scout
Skullcrusher
Scout
Witch Doctor
Spawn Lord
Gun Master
Gorg the Great
Tragul Ch'ak Kruk
Kruul the Firemaster - return to white castle near once you get to the DRC.
Acid Gun Master - return to white castle near once you get to the DRC.
Lee the Luktar - found at the Sky Whale.
Sapling
Whisperer
Mugger
Longshot
Blaster
Reaver
Caster
Shadow
Red Death - found in proving grounds.
Trooper
Warden
Baller
Tiny
Defragger
Underboss
Diesel Diameds X5
Quendyl Zen
Dick Charlsen
Matt Kain
Greaser
Frog Whisperer
Old Ironsides
Green Fingers
The Triplets
Iron Gloves
Chrome Dome
General XZ-339041 - found at the Breakfast Club.
Speaker
General
Patient Zero - found in the Dying Place.
Ziggy Steel