ok, this boss is pretty easy when you know how - did this with a lvl 33 shaman and hunter team
after you've visited the lighthouse you need to get thresher oil - the threshers are found in the bay, lvl 35 mobs - kill em till you have enough
the next stage is to visit the fish gutting fellow on the docks; he'll then send you off to another fellow on a small island across the bay. this guy wants you to cover yourself in fish bait and swim to a nearby shipwreck. you *will* get attacked, but we got a complete on this one after killing one lvl 37 shark.
you'll then learn the secret that tethyr *does* exist, and only appears when the lighthouse is lit. you're directed to an npc (sergeant mills, i think) on the docks, who starts the 'kill thethyr' quest.
when tethyr swims into the bay you'll be able to target him, but not attack until all 12 marksmen are in place. basically, don't attack him directly - he'll resist/evade everything - but use the mortars instead (as soon as you get a cog over the mortar, use it - the cooldown is about 10 seconds). each hit takes approx. 10% of his health, and you need to kill him before all the marksmen are dead.
periodically, he fires water jets which push you back without doing an awful lot of damage. if you get pushed back too far you will fail the quest - try and hang around the middle mortar, as you can be pushed against the tower wall and not fail.
if the marksmen are all dead he'll start firing water bolts at you which hurt quite badly - try not to let it get that far.
after you've visited the lighthouse you need to get thresher oil - the threshers are found in the bay, lvl 35 mobs - kill em till you have enough
the next stage is to visit the fish gutting fellow on the docks; he'll then send you off to another fellow on a small island across the bay. this guy wants you to cover yourself in fish bait and swim to a nearby shipwreck. you *will* get attacked, but we got a complete on this one after killing one lvl 37 shark.
you'll then learn the secret that tethyr *does* exist, and only appears when the lighthouse is lit. you're directed to an npc (sergeant mills, i think) on the docks, who starts the 'kill thethyr' quest.
when tethyr swims into the bay you'll be able to target him, but not attack until all 12 marksmen are in place. basically, don't attack him directly - he'll resist/evade everything - but use the mortars instead (as soon as you get a cog over the mortar, use it - the cooldown is about 10 seconds). each hit takes approx. 10% of his health, and you need to kill him before all the marksmen are dead.
periodically, he fires water jets which push you back without doing an awful lot of damage. if you get pushed back too far you will fail the quest - try and hang around the middle mortar, as you can be pushed against the tower wall and not fail.
if the marksmen are all dead he'll start firing water bolts at you which hurt quite badly - try not to let it get that far.