Here is the full list of all 60 Fight The Dragon achievements.
Complete 500 adventures
Killed the Dragon
Do 500,000 damage to the dragon
Reach Level 60 with a character
Reach Level 50 with a character
Reach Level 40 with a character
Reach Level 30 with a character
Spend 30 stat points on a single character
Reach Level 20 with a character
Complete an adventure in split-screen
Kill 300 enemies with Spears
Unlock the fourth Fire Lord ability
Unlock the third Fire Lord ability
Unlock the fourth Black Rogue ability
Unlock the third Black Rogue ability
Kill 50 enemies with Tomes
Kill 300 enemies with Shurikens
Talk to 200 NPCs
Complete an adventure online with 3 other players
Unlock the fourth Ice Wizard ability
Unlock the third Ice Wizard ability
Complete 50 adventures
Unlock the fourth Fighter ability
Upgrade your inventory to 30 slots and completely fill it
Complete your first campaign
Fire a trap via an event in the ACK
Spawn an enemy via an event in the ACK
Playtest an adventure from start to finish in the ACK
Add 3 stages of dialogue to an NPC in the ACK
Unlock the third Fighter ability
Reach Level 10 with a character
Kill 300 enemies with Hatchets
Unlock the second Fire Lord ability
Kill 500 enemies as a Fire Lord
Kill 300 enemies with Hammers
Kill 500 enemies as a Fighter
Unlock the second Fighter ability
Kill 300 enemies with Wands
Kill 300 enemies with Crossbows
Find and equip a Legendary item
Kill 300 enemies with Short Swords
Unlock the second Black Rogue ability
Kill 300 enemies with Daggers
Kill 500 enemies as a Black Rogue
Kill 300 enemies with Crystals
Equip an item in every slot
Receive your first Dragon Ring
Kill 300 enemies with Staffs
Kill 300 enemies with Axes
Unlock the second Ice Wizard ability
Kill 300 enemies with a single weapon
Kill 500 enemies as an Ice Wizard
Kill 300 enemies with Swords
Collect 2,000 gold
Offer 50 pieces of loot to the Gods
Complete your first dragon encounter
Deposit an item in your Stash
Complete an adventure without dying
Complete your first adventure
Fill your inventory