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