His lightning moves deal huge amounts of damage when the player is hit, be it through his surge or his lightning balls. (bitcultures.com)
The smaller of the two grants close to normal movement speed with faster attacks, while the massive weapon is much slower but deals huge amounts of damage. (gamecrate.com)
Not only do the bosses do huge amounts of damage to Yu's health bar, they're packing a massive amount of health themselves. (fingerguns.net)