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