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