Here is the full list of all 27 Tabletop Simulator achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Upload at least 3 legitimate Steam Workshop items.
Create an 8 player “light show” with the line drawing tool.
Play Tabletop Simulator for over 1000 hours.
Change your color more than 50 times.
Play Tabletop Simulator for over 500 hours.
Play Tabletop Simulator for over 200 hours.
Play Tabletop Simulator for over 100 hours.
Play Tabletop Simulator for over 50 hours.
Flip the table over 1000 times.
Play Tabletop Simulator for over 10 hours.
Flip the table in an absolute fit of rage… 100 times.
Play a civilized game of Chess for 1 hour.
Play the game for 1 hour without flipping the table.
Save 100 items to your Chest.
Tint 1000 objects a different color.
You tried to flip the table… and failed!
Play a game with someone on your friend's list
Play a game with a full room of 8 players.
Complete the tutorial in under 30 seconds.
Lock 5000 items over time.
Play a game in zero gravity.
Have two RPG figurines attack one another. They must hit!
Spawn 10,000 poker chips!
Use your personal color page in the notebook.
You spawned the developers’ special figurines!
You posted a message in global chat, hurray!
Complete the in-game tutorial.