When you think Infinite is over, he always comes back for more. This time he fights the recruit.
Unlike the proven Sonic, the Recruit has much to make a legend for.
This battle is more 2D than the first battle.
You basically have to fight him while he uses some tricky Phantom Ruby powers.
Which often get super annoying.
But with some patience and skill, he can be defeated. Not my favorite battle, but a decent one.
After his fall, he takes the Phantom Rubies and flee. What a coward.