Sonic Adventure 2
15 Achievements
40-48h
Beyond Good And Evil
Clear LAST part in story mode.
10.5%
How to unlock the Beyond Good And Evil achievement in Sonic Adventure 2 - Definitive Guide
After beating both Hero and Dark side story modes, a third story mode will be unlocked that appears between the two sides. This achievement will pop after beating that third story mode. The videos posted below are a walkthrough of that mode. I do not own these videos and do not take credit for it. (Note that this walkthrough is done WITHOUT the air necklace from Aquatic Mine, so you do not need it, although the Knuckles section is much easier with it.)
Credit to Flopsy86: If you find yourself running out of lives too often and want to start with more than 5 lives, you can go to stage select and load up Wild Canyon (Knuckles level). When it loads, climb up to the top of the pillar on the right where you start and there is an extra life. Just exit the level and repeat to get more lives. The amount of lives in Stage Select will be the same as in Story when you load it.
For this trophy you must clear the LAST side of story mode, to unlock this you must have cleared HERO and DARK essentially unlocking their respective trophies as well:
HERO!
DARK!
The LAST story is relatively short, you only have the follow missions to play through in this mode:
Cannon's Core
Boss Battle: The Biolizard
Boss Battle: The FinalHazard
Cannon's Core:
For this mission you go through every character from HERO and DARK (except for Shadow). During each characters portion you're basically going from point A to point B, utilizing time switches along the way to make it through difficulty obstacles. The only "difficult" portion of this mission is with Knuckles where a lot of his bit takes place underwater. You basically have no time to spare when doing his portion otherwise you'll die from the lack of air from being underwater. While it is doable despite this, if you are having trouble consider taking the time to quickly unlock the Air Necklace for Knuckles which allows for infinite air whilst he is under water.
Boss Battle: The Biolizard:
While the rest of the cast is activating a bunch of switches Shadow must face the Biolizard. Defeating the Biolizard takes 6 hits and its pretty simple to do. He goes through two different "phases" of attacks during this boss fight. During the entire fight he'll spin around in place and you run along with his spinning to avoid his mouth or tail. Be careful while running as there are gaps on your platform which are streams of water that will lead you to death.
During the first phase (first 3 hits) Biolizard will shoot energy balls at you either coming from the air or from the ground, depending on which one he does you can either jump over the energy ball or light spin under it. After a while Biolizard will tire out and you can rush over to his head. On his head is a form of railing you can grind out which will let you to his life support which you can hone in on and attack. Repeat this 3 times.
During the next phase instead of the tiring out after the energy balls the Biolizard will roar and pink balls will appear surrounding him, quickly use your homing attack to make your way upward to the life support and attack it...repeat this 3 times to finish him off.
Final Boss Battle: The FinalHazard:
During this mission you will be playing as Super Sonic and Super Shadow. You will be using to move up and to dive down. The objective is to hit the red area on the FinalHazard 6 hits to kill it, after every hit more obstacles will appear to get in your way such as lasers and pink balls such as the ones from the previous Biolizard fight. So long as you're good about dodging the obstacles this boss fight will end pretty quickly.
Keep in mind you will die if you run out of rings, if you find yourself unable to hit the red area you can fly pass the FinalHazard to switch characters however with less rings then you if you would have hit him (you shouldn't have to resort to this at all though). Once you have finished this your trophy will unlock.