WHOA! GET READY FOR ONE HECK OF A GIG! This is how to rid of that slimy squid boss. Kraken is a difficult boss, and just like with the last boss battle, you're going to have to be more mindful of your health than you may have been in earlier boss fights. Kraken packs an incredible punch with both individual physical attacks and magical attacks that can be inflicted on the entire party at one time. Add into the mix his ability to attack multiple times per round and cast Blind on the entire party (the latter of which happens fairly often only heal it on melee fighters), and you have a boss that can be quite the handful. His weakness is lightning, so Zeus's Wrath is a fairly nice item to launch at him with White Mages or ineffective melee attackers (melee attacks don't work very well on this foe). Otherwise, you'll want any black magic casters in your party to use Blizzaga until it is no longer useable. Even though ice is not the foe's weakness, the high level of the spell will inflict 1,000+ HP per round, guaranteed. Around the level you're currently at, you should be able to shave off 4,000+ HP with Blizzaga spells alone. Then, head down to Thundara to finish the job, coupled with item-based attacks and melee attacks if necessary.