The Nyakuza Metro + Online Party Add-on for A Hat in Time has 8 achievements.
Put 10 different stickers on a single screenshot!
Collect 30 Stickers in Nyakuza Metro
Collect your first holographic sticker!
Discover a secret food combination!
Collect all Time Pieces in Nyakuza Metro!
Clear an act in Online Party as the person in lead!
Participate in an Online Party with 10 or more total players!
Collect 10 Time Pieces in Online Party!