force blast can also be used with the encrypted orchid

HOWEVER Valkyrie Sword can do a Force Blast Technique without having it mastered

Mechwarrior is right, there's no secret move for the valkyrie sword. This whole guild is bad, the sword is in the second twin tower hidden below the shield outsider, dimension shift required.

you could also learn Force Blast with Red Umbrella

The Valkyrie Sword's Secret Technique is actually just the hit effect from the Sword technique Parry.

It's actually the Kung Fu Shoes and Dragon Shoes that can do the Flashing Air Kick.

Lethal Boots can do the Hatchet Heel - Down, Down, Square

NOT the Flashing Air Kick - Quarter Circle Forward, Square

I think the shoe list might be reversed.

The shoe technique names are reversed. The Flashing Air Kick moves are the Hatchet Heel moves and vice versa.

This guide doesn't tell you that each technique can only be originally used by a handful of weapons, and may be unlocked for the whole category - but only by grinding it with one of the weapons it may use. This lacks such a list, therefore it lacks utility.

You are missing the valkyries secret move, but other than that good job.