Here is the full list of all 56 Grim Clicker achievements.
Complete 100 quests
Remove three locks
Complete 50 quests
Kill 20 bosses
Reach Zone 50
Kill 500 champions
Get 20 wisdom
Get 15 wisdom
Click 50000 times
Get 20 strenght
Get 20 dexterity
Kill 10000 fireflies
Perform 50 rituals
Kill 10 bosses
Upgrade weapon to quality 15
Upgrade any item
Get 15 strenght
Get 10 wisdom
Perform 20 rituals
Get 10 strenght
Open 30 chests
Kill 1000 fireflies
Get 15 dexterity
Upgrade weapon to quality 10
Get 10 dixterity
Open shard chest
Remove one lock
Kill 5 bosses
Find people on the shard
Get level 20
Get 5 wisdom
Collect 500 candles
Collect 250 candles
Get level 10
Get 5 dixterity
Upgrade weapon to quality 5
Open 20 chests
Open 10 chests
Open 3 boss chests
Perform 10 rituals
Complete 10 quests
Upgrade any weapon
Collect 100 Candles
Reach Zone 10
Get 5 strenght
Click 5000 times
Collect 50 Candles
Kill 25 champions
Dissasemble any item
Open 1 chest
Kill 20 fireflies
Get level 5
Reach Zone 5
Perform 1 ritual
Click 500 times
Kill 1 champion