A sword that flies, and daggers that are not consumables
The official material promises 50+ melee weapons and 20+ throwing types. These are the two systems the demo actually shows working.
The arsenal is where the demo is most obviously a slice. Three melee weapons turn up, mapping onto the three damage types, and the dagger belt gives you a second attack that costs no stamina. The official feature list promises fifty-plus melee weapons and twenty-plus throwing types, so what you are judging here is whether the slot system and the feel of the swing scale to that catalogue.
The two documented systems answer different questions. Endu answers how you move: flight is a weapon property, upgraded as a weapon, which lets the level design put a ledge out of reach and later turn it into a shortcut. Throwing weapons answer how you fight without spending the bar. Together they are the reason the stamina economy has an escape valve instead of just a cost.
Endu, the Holy Sword
The legendary blade that lifts you across gaps. Its flight is a traversal stat you upgrade, not a spell you cast.
Throwing Weapons
Twenty-plus types of thrown weapon that are not consumables, giving you an attack that costs no stamina.