Mix one part Devil May Cry, on part strategy game, one part Pokemon and about 10,000 parts pure action, Chaos Legion is the latest effort from Capcom. Using mystical helpers called Legions, you must battle through eleven stages of the rowdiest, ugliest beasts on the PS2, and emerge victorious.

On your journey, you'll have one more mystical helper to aid you... IGN Guides. We've torn this game up, and are ready to share our fire-hardened battle knowledge with you. Inside this tome, you'll find a detailed walkthrough, battle tips, boss strategies for all the biggest badasses, level-up tips, Legion knowledge, and all of the secrets we've uncovered. We've littered the whole thing with bunches of screens for your perusing pleasure as well. Grab a sword and an undead buddy and let's have at it.

Get the guide here.

Clear the game on Normal or higher difficulty.

Beat the game once to unlock Hard Mode at the difficulty menu.

Clear Stage 9 (do not return) with Arcia to acquire the Map Selector item, allowing Sieg to replay cleared stages for items and experience.

Clear stage 11 for alternate stages (#1 to #11). These stages replace the previous stages you've played, with new items (notably Thanatos Crest pieces) in some stages.

To unlock Super difficulty, beat the game on Hard.

To unlock the Ultimate Legion, collect all nine of the Thanatos Chips scattered throughout the stages.