heres what i would do, use a bunch of fire shield tc and then use storm lord to take out the minion, then use blades traps and stuff like that and maybe get some feint, curs, and hex tc then use a tc triton (or regular triton) and the boss should be killed! good luck!
1. How much storm critical do you have? 2. How much resist do you have? 3. How much Storm damage do you have? 4. Do you use the waterworks gear?
1. Start of with a Stormblade 2. Fire Shield your self, spam until enough pips for Tempest 3. Feint the boss, curse him and trap him 4. Use an Infallilble for a better chance you wont fizzle 5. If you have the pet, Sharpen blade a storm blade 6. (Optional) Satyr if you need it. 7. Time to Tempest!
I calculated how much damage it should do with critical. It should do 12351.825 damage! Technically, this isn't a bug. It isn't impossible defeat it, it's just hard.