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