The boss gate should appear after you beat acts one and two in the first three stages. Keanu Reeves is officially confirmed as the voice of Shadow in Sonic X Shadow Generations. After you beat ...

Perfect Chaos is the second boss in Sonics part in Sonic X Shadow Generations ... Once youve done this, a boss gate will appear. To open the boss gate, you need three boss keys.

Play as Shadow the Hedgehog aboard the Space Colony Ark level and fight the massive Biolizard boss in ... from the upcoming Sonic the Hedgehog installment: Sonic X Shadow Generations.