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