Here is the full list of all 53 Gravity Circuit achievements.
Complete the game. Finally, peace.
Don't get crushed under Commander Circuit's hands. No slamming!
Avoid Kernel's grab attacks. No touching!
Use Burst Techniques 100 times. Energetic strikes!
Survive the Burst Technique of any boss ten times in one fight. Slip by!
Defeat 100 enemies with thrown objects. Send them to the moon!
Learn every Burst Technique in the game. Master of combat!
Score a goal with the training ball. Nice shot!
Defeat the Rebel Circuits. Is it finally over?
Punish Hash for laughing at you in Cyberspace. This is serious!
Grab an enemy's shield and throw it 10 times. Thank their generosity!
Rescue Yuki and Amadeus. Who are they, and why are they so cute?
Throw any object spawned by a boss back at them. That'll show 'em!
Defeat 250 enemies in combat. Put some fear into them!
Defeat 50 enemies with thrown objects. Look at them go!
Defeat 100 enemies in combat. Show them what you got!
Pay for the damages caused. It's only right.
After reaching Guardian Corps HQ, clear any stage without taking hazard damage. Safety first!
Rescue all bots in need of help in any stage. Help them out!
Clear any stage without using a Burst Technique. Strong fundamentals!
Defeat any boss without using a Burst Technique. Teach them the basics!
Defeat 1000 enemies in combat. Assert your dominance!
Overkill 250 enemies. No mercy!
Collect all health upgrades! Keep your chassis in good shape!
Collect all burst energy upgrades! Keep your fists powered up!
Collect and research all Data Chips. Very studious!
Purchase every Booster Chip in the game. One for every occasion!
Rescue all bots in need of help. Lending a hand!
Clear the game without collecting any Health Upgrades. Already in shape!
Clear the game without collecting any Burst Upgrades. Got enough energy!
Clear the game without purchasing additional Booster Chips. Don't need any more!
Clear the game without purchasing additional Burst Techniques. You only need one!
Pet Yuki or Amadeus. Even a hero has a soft side!
Score ten points with the training ball in a row without touching the rim. Nice shooting!
Rest with Fix for a while, and contemplate things. Very comfy!
Defeat any boss, using a burst technique to finish them off. Put on a show!
Defeat any boss without taking damage. Clean fight!
Clear any stage without taking damage. Truly untouchable!
After reaching Guardian Corps HQ, clear any stage without using a repair station. Gotta keep moving!
Clear any stage with just your trusty hookshot and throws. It's all you need!
Don't get hit by a laser in Steelworks. Outrun everything!
Don't get caught in purple goop in Junkyard. Stay clean!
Don't get frozen in Mountains. Keep warm!
Don't get hit by electrified surfaces in Power Plant. Bzzzt!
Don't touch any road signs in Highway. Roam carefully!
Don't get hit by the sound waves emitted by Medley's giant speakers in City Center. Enjoy the silence!
Don't let your mech get destroyed in Ore Mines. Safety first!
Avoid all of Nega's Burst Techniques. Move like a ninja!
Defeat Circuit Crystal in one go without retries. Show who's the boss!
Have everyone you have helped show up during the game's ending cinematic. Touching reunion!
Complete the game in New Game+ mode. Time for another round?
Complete the game in Circuit Mode. Great job!
Complete all of the game's other achievements. Skillful!