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