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