Thrown pots of wonder or confusion will also confuse him, which is better than blindness generally. It's pretty rare to get to him without at least one disabling item just by happenstance.
Ball spells are generally better than bolt for this (and most, honestly) fights since ball spells can never be shrugged, and don't need to be in line of sight. Acid ball pretty much solves all of your problems in this game.
Hoping to win with every class, doomed. Archer, Barbarian, Bard, Beastfighter, Druid, Elementalist, Farmer, Fighter, Monk, and ULE Priest down.