How to make Gemini ??? complete"Land a hit on a mid-air opponent 10 times"
Step 1:
、Before you begin, you need at least a half of cosmo, fortunately for us, we have enough cosmo at the start of the fight. If you don't succeed in the beginning, you should guard yourself and watch for an opportunity of charging your cosmo.
Step 2:
、Get close to your opponent, use our Combo 1 （You could ignore my settings XD ）just beat 2 times like this ↓
Step 3:
、Then use Burst Strong Attack to hit opponent in the air ↓
Step 4:
、Use Burst Dash immediately you can keep up with a mid-air opponent quickly, just like this ↓
Step 5:
、Finally, you just need to keep pressing "Combo 1" 's key
complete its all the movements, you can get 10-11 hits. ↓
Congratulations! You made it!

、If you still think it's difficult, you should get more practice in training mode.