Here is the full list of all 59 Boundless achievements.
Defeated 5 Creatures at the same time in a single Bomb Hit
Core Objectives completed
Became Viceroy of a World
Defeated a Creature with 1% Health remaining
Placed 1,000 Plots
Survived on a Special World for 2 hours without Defeat
Harvested 100 Dormant Meteorites
Fully upgraded all Skill Sets
Placed 50,000 blocks
Purchased your first Item with a Request Basket
Chiselled 10,000 Blocks
Successfully increased the rank of an Item with the Forge
Increased the rank of an Item in the Forge to 300
Sold your first Item in a Shop Stand
Achieved a Beacon Prestige rating of 500,000
Spent 500,000 Coin in Shop Stands
Defeated 180 different Creature variants
Discovered 50 Regions on a single World
Destroyed 100,000 Blocks
Complete 100 Active Meteorites
Completed all Daily Feats of the same type in a single week
Unlocked your first Skill Set
Fully upgraded a Skill Set
Achieved level 50
Consumed 1,000 Items
Defeated by a falling Meteorite
Successfully revived your first Citizen
Activated 20 unique Skills simultaneously in a single Skill Set
Achieved level 40
Crafted 100,000 Items with Machines
Travelled 100 metres by a single Grapple-swing without touching the ground
Joined a Settlement
Defeated 1,000 Creatures
Fell 200 meters without being Defeated
Achieved level 30
Became Warden of a Settlement
Reached the top of the World
Achieved level 20
Crafted your first Item using Spark
Travelled to a new World through a Citizen made Warp
Travelled through a Portal
Successfully completed your first Trade with another Citizen
Mined right down to a World's Mantle
Achieved level 10
Discovered a new Region for the first time
Completed your first Journal Objective
Chiselled a Block for the first time
Destroyed your first piece of Gear
Cleansed 10 Skills
Learned your first Skill
Placed and Fuelled your first Beacon
Left the sanctum for the first time
Completed 185 Journal Objectives
Completed 675 Feats
Forged an Item with 3 Boons, 3 Defects and 3 Quirks
Successfully revived 500 Citizens
Completed a Meteorite on a Special World without being Defeated
Earned 500,000 Coin from Beacon Footfall
Visited 40 Worlds of different types