As it would turn out, Toukiden is a well-balanced game for the most part. Every enemy has a weakness to one or two elements. For example, the Manhunter — the large spider boss which happens to be one of the first you encounter — is weak to fire, yet strong against water. That is good to know, because you can equip a fire weapon before you head out on a mission that will see you up against a Manhunter. But the right element is not always apparent, so it helps to have an oni weakness guide that explains it all.

The information can be gleaned by reading the records section before leaving on a mission. As always however, you may not be able to read that information if you have yet to encounter the boss. For that reason, I have included a simple oni weakness guide below that outlines what each boss is strong and/or weak against.

Simple Toukiden Oni weakness guide

Manhunter

Weak: Fire

Strong: Earth

Bloodhunter

Weak: Wind

Strong: Earth

Windshredder

Weak: Earth

Strong: Wind

Skyshredder

Weak: All except Sky

Strong: Sky

Jollux

Weak: Wind

Strong: Earth

Edax

Weak: Fire

Strong: Water

Pyropteryx

Weak: Water

Strong: Fire

Astroteryx

Weak: Earth

Terragrinder

Weak: Wind, Fire

Strong: Earth

Pyrogrinder

Weak: Water, Wind

Strong: Fire

Harrowhalf

Weak: Sky

Strong: Fire, Water

Dreadhalf

Weak: Sky

Strong: Earth

Viper Queen

Weak: Earth

Strong: Water

Viper Queen (Kagachime)

Weak: Earth

Blade Wing

Weak: Water

Strong: Earth

Blade Wing (Inkarura)

Weak: Earth

Chtonian Fiend

Weak: Water, Wind

Strong: Fire

Chtonian Fiend (Daitenma)

Weak: Earth

Hell’s Warden

Weak: Earth

Strong: Water

Hell’s Sentinel

Weak: Sky

Nightblade

Weak: Fire

Strong: Sky, Wind

Nightblade (Yomitosae)

Weak: Water

Cimmerian King

Weak: Water

Strong: Fire

Cimmerian King (Tokoyonookimi)

Weak: Earth, Water

That’s about it. You might want to bookmark this oni weakness guide if you’re playing through the game currently and will be checking back frequently. Best of luck hunters!