Your comments

The spear when thrown and more precise than the other weapons

The animation I made was simple because it was just to show more or less the spear thrust [R]

Because it will be a throwing item like the knife

I also think the boomerang is a good idea but how it could be used without losing it

That would be very good

Potion of invisibility would not be very op?

But this will serve to ward off the enemies if in case you are low on life

That's what I meant too.

The secondary attack and the power of the spear

I meant the Opponent.

blender?