Here is the full list of all 23 39 Days to Mars achievements.
Finish 39 Days to Mars with one player.
Fail everything and still make it to Mars.
Get eaten by the giant space kraken.
Capture all the specimens without cleaning up.
Capture 39 specimen for the specimen tank.
Break 39 asteroids while mining for coal.
Make 39 cups of awful tea.
Embark on an adventure without completing the volatile helioscopic password generator.
Play through 39 Days to Mars in one sitting.
Finish 39 Days to Mars with two players.
Crash on Mars.
Defeat the giant space kraken.
Capture all the specimens and clean up afterwards.
Fail at something.
Fix the ships controls on the first attempt.
Fix the water leak on the first attempt.
Leave the fire hydrant running when you embark.
Land on Mars.
Drink 39 cups of perfect tea.
Finish 39 Days to Mars without ever failing a puzzle.
Complete 39 Days to Mars in less than 30 minutes.
Collect enough coal without running out of oxygen.
Complete 39 Days to Mars in less than 20 minutes.