No missable achievements (plus 46 unknown)
Sign in with Steam or Xbox to track your progress, and:
Light up the spaceship!
Sit in 3 different chairs!
Put on your first badge!
Slide down a really long slope!
Ride the vacuum!
Equip 3 badges!
Find Hat Kid's Secret Hideout!
Find all Murder on the Owl Express clues!
Climb to the top of Subcon Forest's big mushroom!
Get a total of 2000 points in Battle of the Birds!
Collect all Time Pieces in Battle of the Birds!
Collect all Time Pieces in Mafia Town!
Collect all Time Pieces in Subcon Forest!
just... why... ?
Collect all Time Pieces in Alpine Skyline!
Do a 360 flip on the scooter!
Collect all Time Pieces!
Hook onto a ceiling fan with the hookshot!
Don't fall into the rising water in Subcon Well!
No hand-holding for you, apparently!
Do 5 homing attacks in a row, without touching the ground!
Complete the Lava Cake peak without touching the lava at all!
Make it through Murder on the Owl Express without finding any clues (you suck)!
Knock off all the sitting Mafia in Mafia Town!
Complete Train Rush without dying or time bonuses!
Complete The Big Parade without falling into the audience below!
Defeat any boss with the 1-hit hero badge equipped!
Make it through Dead Bird Studio without being seen at all!
Clear Ship Shape Without Upsetting The Captain!
Collect 30 Mod Rift Tokens from Steam Workshop levels!
Collect all Time Pieces in The Arctic Cruise!
Clear a Challenge Road!
Rate a Steam Workshop level!
Clear All Objectives In a Single Death Wish!
Collect 3 Time Pieces In Co-op!
Discover a secret food combination!
Collect all Time Pieces in Nyakuza Metro!
Clear an act in Online Party as the person in lead!
Collect 10 Time Pieces in Online Party!
Obtain 50 Death Wish Stamps!
Put 10 different stickers on a single screenshot!
Collect 30 Stickers in Nyakuza Metro
Play a mod from the Steam Workshop!
Collect your first holographic sticker!
Obtain All Death Wish Stamps!
Participate in an Online Party with 10 or more total players!