Suggestions
Bow and Arrow: Both of the games this is based on have bows, why not add one
Custom Player + Animations: I can see where this would be difficult, but it would be extremely useful
Fatal Blow: Similar to Legend of Zelda, there will be about a 25% chance to instead of doing a powerful slice, you jump, and then stab the victim in the chest.(It would be nice if someone could get a video/gif of this)
Ultimate Attacks:Charge up by dealing/taking damage, light key to unleash an attack based on what you are using
Sword: Heroic Strike: Deals fatal damage if it hits, with a small radius where people get stunned
Bow and arrow: Cluster-Bomb arrow: Shoot an arrow towards the sky, when it hits the ground, it explodes, then fires out more bombs
Axe: Executioner: Kick an enemy to the ground, then cut off his head.
Spear: Throwing: Throw the spear, lodging in the enemy's heart, killing them.
Staff: Turn into a dragon because why not