Here is the full list of all 69 GravitreX Arcade achievements.
Land right in the center of the landing platform
Complete a level without using thrusters on one of the ships
Complete a level with no damage
Land quickly and efficiently
Fly fast
Show great piloting skills
Rack up 3 air hours
Rack up 10 air hours
Rack up 20 air hours
Complete the first level
Slide into a Bull's Eye
Land a ship with one thruster weakened, the other sporadic but not weakened, and stability system on the weak side broken.
Complete 10 levels
Complete 50 levels
Achieve a very high angular velocity
Land a ship that has a critical core
Land a ship really hard
Land a ship that has no fuel left
Slide on the ground a lot
Do a Quick Landing and Bull's Eye at the same time
Do an Instant Bull's Eye without taking damage
Beat the Troll
Complete level 10, Half Duplex
Escape the trap
Overcome the Fuel Crisis
Reach the final level
Finish the game
Tow a broken ship to its platform
Crash into the other ship so hard that it explodes
Crash so hard into the other ship that your ship explodes
Self destruct a broken ship
Self destruct a healthy ship
Ship to ship collision causes minor damage
Shower the other ship in thruster particles
Land both ships at the same time
Activate the Autohovering system
Land a ship without touching the controls at the end
Crash so hard your ship explodes
Go really fast without taking damage
Get a Bull's Eye with both ships
Tow the other ship so poorly that it explodes
Crash and Burn while towing something
Crash hard into a box but don't take much damage
Crash so hard into a box that you explode
Crash so hard into a hinged box that you explode
Land a ship that has almost no fuel left
Complete the game without losing a single ship
Do a face plant
Get an autohovering ship to land
Slide a ship that has no fuel left right into the center of the platform
Rescue each other from being flipped
Unlock all achievements
Played the game as many times as the number of quarters it cost to buy it
Complete Down Under without taking damage to any systems
Fly through the gap on Boilerplate upside down
Glide through the slit on Swallowed upside down
Spent one hour flying per dollar paid for the game