Here is the full list of all 47 Kagura Survivors: Endless Night achievements.
Defeat 10000 Purple Slime
Complete Stage 3!
Defeat 10000 Green Slime
Defeat Green Slime Boss
Defeat 1000 Elite Goblin
Defeat 1000 Manager
Collect 10K Gold
Complete Stage 2!
Defeat the Demon Lord
Defeat the Goblin Boss
Defeat 100 Elite Goblin
Defeat 1000 Garden Gnomes
Defeat 1000 Wild Gnomes
Defeat the Wild Gnomes Boss
Defeat 100 Manager
Complete Stage 1!
Defeat 10K Enemies
Defeat 1000 Purple Slime
Defeat 100 Goblins
Defeat 1000 Goblins
Defeat the Elite Goblin Boss
Defeat 100 Garden Gnomes
Defeat Garden Gnomes Boss
Defeat 100 Wild Gnomes
Defeat Manager Boss
Earn Style Level A
Earn Style Level S
Earn Style Level SS
Earn Style Level SSS
Eat 100 Hot Dogs
Survive 5 minutes with any character.
Die once
Collect 10 items
Defeat 100 Green Slime
Defeat 1000 Green Slime
Defeat 100 Purple Slime
Defeat Purple Slime Boss
Defeat 10000 Goblins
Defeat 10000 Elite Goblin
Defeat 10000 Garden Gnomes
Defeat 10000 Wild Gnomes
Defeat 10000 Manager
Collect 100K Gold
Collect 1M Gold
Die 10 times
Defeat 100K Enemies
Defeat 1M Enemies