Boss-Destroying Pierce Build

this is my first build/guide so it might be bad.
First, ill explain why i picked these gears, this star power and gadget.
The shield gear and gadget are for being able to tank hits (JUST IN CASE YOU GET HIT, I STILL RECOMMEND YOU DODGE BOSS ATTACKS.) and the star power is pretty much the only good option since i dont think bosses can be slowed and it also helps you dodge attacks better.The only reason im making this guide is because at the time of making this, there is a "Boss Dungeon" event. When you first start fighting the boss, you can either waste your first two shots to go to your last shot, or spam all of them on the boss. I do NOT recommend wasting two shots to go to the last since this build doesnt use Mission: Swimpossible, but you can do it if you want to. After that, just keep picking up shells and spam attacks on the boss. Use your super if there is a ton of annoying pets for a a TON of shells which are VERY useful for the You Only Brawl Twice gadget which gives you 1.2k shield for every shell you have dropped which is still on the map. Also use You Only Brawl Twice's KB (knockback if you are not a TBC player) to push the boss or any pets away. I dont really think you need a brain to use this guide, you just spam on boss = big damageforgot to mention hyper, the hyper isnt really that good if the boss is solo and not spawning any pets, but when i used this build against Bruce Nita, oh boy did i drop so many shells.