JayTB is a legend at this game and has created a series of tutorial videos. If you use them please be sure to subscribe to his youtube channel.

Movement

Ultimate Techniques

Weapons

Dragon Sword

Lunar

Heavy Weapons

Nunchuku/Flails

Kitetsu

Unlabored Flawlessness

Projectiles + Ninpo

Bosses

*Do note that these are general boss mechanic guides, not necessarily speed strats. Still very much worth watching.

Murai

Masakado

Dynamo

Hydracubus

Bone Dragon

Alma

Tanks & Helicopter

Electric Worm

Double Electric Worm

Pazz Zuu

Doku

Yotunfrau

Flame Worm

Smaugan

Awakened Alma