Splinterspike

Splinterspike is a heavy weapon with 18 damage, range 9.5, proficiency scaling 7, weight 7, and attack speed 0.52. Damage times speed is 9.36. Sell price 165. It is not marked craftable. Drop sources for individual weapons are not published. Speed is higher when the weapon is faster. This damage-times-speed figure ignores enchants, range, and moveset.

Equip once Heavy proficiency reaches 6. Weapons come from chests, drops, quests, shops, or crafting. The starter from Vulcan locks the class until a wipe.

Raise Heavy proficiency by hitting with that class, then pay 15 Insight, 2 stat points, and Marks at the matching trainer in the Whispering Hills dojo. Past proficiency 3 you need Percival's Recommendation, and training one class past 3 locks the other two. The listed cap is 10.