first boss: kill the adds fast - one of em seems to just attack normally, the other stuns, throws 1 party member in the air n does a faaaair bit of dmg. 1mage to tstorm is enough on norm. dont rely on tankys wws - unlucky wws miss on that can kill a dps or heals on that add verry easy

other then that its tank n spank.
2nd boss: lower hp then first and third, on normal easily burnable - especially if u drag him to the right corner away from the 3 eggs to buy you time.
normal strat: kill the 3 eggs before they start aoeing so u can do the next part without getting hurt. scatter on yellow writing as he will either burry in the ground (targets a random partymember and then seems to do heavy single target dmg on that player + some aoe dmg around him) or he will spawn 2 larvae with a weak direct hit but some nasty poison around him. on normal it wont kill the tank but if those spawn under the boss and the party is stacked they might well kill the rest of the party

- scatter - kite- kill -return to dps boss. eggs respawn each phase i think.
boss 3: 4 adds are immune at 0%hp, far right sysname skill seems to heal an add for 6% O-o - can draw the tank in, does some mid-range dmg aoes, spawns 2 blue spheres that can be killed (unconfirmed: downing them will reduce dmg on electrical aoe) didnt find out anything more about the strat really - decided death over n over to find out what the sysname stuff is wasnt worth it for now. boss burnable on normal mode, not as easy as 2nd boss tho. On normalmode if u have a tosh geared tank you can ignore the adds completly actually if the heals is decently geared aswell.
boss 4: 2 minibosses to kill before boss spawns, unreadable sysname debuffs - they seem to stack. Boss spawns add waves out of nearby eggs/puppas/whatever - those disappear and seem to work as a counter for enrage lol.
the addwaves can be tanked for a while pretty easily - if the dps is op u can just leave em to the tank to aoe. debuffs stack however so if the fight takes longer u'll want to down the adds atleast every other wave. on later waves 1 big bug similar to the minibosses from before joins each round. that thing really has to die
stacking debuffs and continuuous adds make this hard even on normal mode if ur low on either mages or single target burn dps.
havent been to 5th on normal yet
no guaruantee of accuracy