Here is the full list of all 100 Fantasy Survivors achievements.
Reach level 100 with Ivar
Reach level 200 with Ivar
Unlock the dragon staff
Unlock the greataxe
Earn 1000 gold in a single run
Unlock 5 items in a single run
Escape alive with a friend
Escape via the portal
Unlock all items and use the exit
Eat 25 times in a single run
Eat 50 times in a single run
Escape alive
Reach level 100 with Nokk
Reach level 200 with Nokk
Reach level 100 with Isaac
Reach level 100 with Tessa
Reach level 100 with Mortimer
Reach level 100 with Brumik
Reach level 100 with Lycus
Reach level 100 with Tanith
Reach level 100 with Hilda
Reach level 100 with Erin
Reach level 100 with Yama
Reach level 100 with Thorn
Reach level 100 with Peter
Reach level 100 with revenant
Reach level 100 with mechanoid
Reach level 100 with Griffo
Reach level 100 with Esme
Unlock the longsword
Unlock the poison dagger
Unlock the drain wand
Unlock the cannon
Unlock the familiar
Unlock the longbow
Unlock the silver spear
Unlock the claws
Unlock the punch
Unlock the scythe
Unlock the morningstar
Unlock the greatsword
Unlock the steam lance
Unlock the javelin
Earn 500 gold in a single run
Kill 3000 enemies in a single run
Kill 5000 enemies in a single run
Break 1000 urns
Kill 100K enemies
Kill the 1st Guardian
Kill the 2nd Guardian
Combine water and cold to freeze an enemy
Combine water and shock to electrocute an enemy
Unlock the sickles
Unlock the playing card
Unlock all items and use the portal
Reach level 100 with Chester
Enhance a weapon to +15
Acquire 1000 marbles
Do 5000 average damage
Do 10000 average damage
Reach level 100 with Titania
Unlock The Tangle Bow
Acquire 1000 loot materials
Survive armed with 6 primary weapons
Survive armed with 5 secondary weapons
Survive armed with 5 map-specific weapons
Unlock 25 achievements
Unlock 50 achievements
Unlock 75 achievements
Kill the 3rd Guardian
Unlock the pickaxe
Reach level 100 with Mobrik
Do 20000 average damage
Kill 20 mini bosses in a single run
Gain 10 followers
Get killed by a minecart
Rescue and arm 5 prisoners in a single run
Reach level 100 with Cassie
Reach level 100 with Ionna
Unlock the glaive
Unlock the voodoo doll
Destroy 20 sarcophagi in a single run
Kill 10K enemies in a single run
Kill 20K enemies in a single run
Enhance a weapon to +21
Use dynamite or bombs to shatter a frozen enemy
Throw oil on a burning enemy
Drink one of each type of ordinary potions
Drink one of each type of strong potions
Command 5 skeletons
Command 5 vipers
Do 40K average damage
Find 50 marbles in a single run