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