Onimusha: Warlords
55 Achievements
1,000
15-20h
Save the Princess
Defeat Fortinbras. Details for this achievement will be revealed once unlocked
15
33.01%
How to unlock the Save the Princess achievement in Onimusha: Warlords - Definitive Guide
Now, you should be aware that it's still really hard if you dont use the bishomon sword correctly. You want to use the magic attack with "y" when he slumps forward ONLY....he can take 8-9 swings to stagger with the magic attack. Even though you have unlimited magic and he looks like he is getting hurt more with the blue fire all over his body, you want to use regular attacks with "x" to make him slump over first. THEN smack him in the head with "y". He'll go down much faster this way, which is good, because your tiny health bar can only take about 3 hits in this fight.
I'll post some dark realm tips on that achievement page.
TheOnlyMatto has an alternative method which may be easier for you:
'way easier to split the two and face him twice. just use medicine the first time and have a save outside the demon door. then go back, upgrade, fight to the bottom of the dark realm and complete the game again."
Story-related, can't be missed.
Just after the previously boss fight, you will run down some platform and, in the next room, will watch a scene and then the final boss fight. He's not the hardest boss from the game. All you need to do is keeping attacking. Doing this, you won’t leave much room for him counter strike you. When he’s summoning the pink orbs, prepare to hit him with level 3 Shippuu special attack. Pressing triangle just before the pink orbs hit you will make you invulnerable, and the orb animation will be gone before the Shippuu special. Don't let him grab you or he will insta-kill you. Just keep attacking and using Raizan special attack while he’s not summoning the orbs and you will be okay.