Here is the full list of all 51 Starbound - there are Unstable achievements.
Find 100 unique codex items. Study them all, prepare for a pop quiz.
Kill another player. Unity is overrated anyway.
Complete 50 quests for your colonists. When did this become your full time job?
Catch 42 unique bugs. Give them all funny names.
Collect at least 50 unique action figures. Insist to your friends they're actually called statuettes.
Move a planet's worth of blocks. If you weren't using a Matter Manipulator you'd be ripped.
Obtain a complete alpaca costume. Use it only for good!
Unearth 55 unique fossils. Try not to pay attention to the ones that are alarmingly humanoid.
Defeat the Shockhopper MK I. Notice it rarely hops.
Collect 210 unique pieces of armour. See how many you can wear at the same time. (Spoiler, it's 3).
Complete Mazebound. You only need to beat it 300,000 times to win a slide whistle.
Kill 100 small flying monsters. They had it coming.
Obtain a cool vehicle. Pop some sweet wheelies.
Prepare at least 100 unique dishes. Bonus points if they're edible.
Harvest 30 unique crops. Start thinking about who you'd like to romance and that barn extension.
Capture your first bug with a bug net. Esther would be proud.
Restore a complete fossil. Make wild assumptions about what it used to be.
Complete the Cosmic Museum's cosmic collection.
Defeat the Ruin.
Return the Baron to the outpost.
Complete 25 quests for your colonists. These guys sure do ask a lot of you don't they...
Return Lana Blake to the outpost.
Become champion of the arena. Crush your foes like an orange sorbet.
Complete 10 quests for your colonists. Feel like an asset to the community!
Return Tonauac to the outpost.
Obtain an entire set of armour. Now use dye to make your armour fabulous.
Recruit at least 12 crew members. Consider starting a pension plan.
Attract 10 unique tenants. Marvel at their collective peculiarity.
Return Koichi to the outpost.
Build a large colony. Well done Protector!
Build 5 homes in a very small space. This isn't a healthy way for anyone to live.
Attract your first colonist. Make sure you treat them right.
Collect your first musical instrument! Keep playing, even when everyone begs you to stop.
Augment your EPP. Now it's an AEPP.
Capture a monster. How does it fit in that tiny ball?
Practice your chef skills. Try not to harm anyone.
Defeat Mother Poptop. Every Poptop you meet from here on out is a lonely orphan.
Recruit one crew member from every race. It's like a teeny tiny protectorate.
Return Nuru to the outpost.
Recruit a penguin mercenary from the Beakeasy.
Defeat the dastardly Dreadwing. Bring joy to penguins everywhere.
Recruit your first crew member. Captain!
Incapacitate an innocent bystander. You monster.
Destroy a robot chicken. Don't try to eat it.
Fix your ship.
Find a Codex. On Earth it's rude to read other people's diaries.
Meet Esther.
Obtain the mythical perfectly generic item.
Harvest a crop. See what happens when you eat it.
Complete a quest! Joke's on you, there isn't any XP in this game.
Survive the Protectorate. It could have been worse.