Here is the full list of all 36 Ikonei Island: An Earthlock Adventure achievements worth 1,000 gamerscore.
Destroy all Scrap Piles
Crafted Bottle O' Wind!
Blew away the pirates
Activate all Beastmaster Statues
Pollinate 1000 plants
Place down 1000 items
Dig up 1000 items
Found all the Earthlock Parts
Fish up 1000 items
Equip three pieces of clothing in different slots
Chop something down 1000 times
Get 100% rating in all regions.
Complete all the Construction Altars
Activated all the statues
Pick up 1000 items
Get all Dwellings to level 2
Free 8 trapped creatures
Harvest 1000 fruits
Break 1000 rocks
Activate all Scholar Statues
Use a tool to gather 1000 resources
Destroy all pirate bases
Discovered Heartland
Got ambushed by Captain Rustbristle
Restored the magical cloud cover
Unlocked all other achievements
Obtain one of each weapon
Completed Sariel's Quest
Completed C.A.T.'s Quest
Completed Milas' Quest
Completed Fiolas's Quest
Defeat 1000 Monsters
Had all companions following at the same time
Activate all Advisor Statues
Activate all the Shrines
Destroy All Monster Spawners