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