I finished Jupiter Lighthouse last night. Nothing feels better than being able to tackle a big ol' dungeon like that, I felt very satisfied after lighting the beacon. I'm trying to get to Prox to light the Mars Lighthouse, but there's that big Ice Block in the way, and I don't know how to get past it. Still trying to figure that one out.
Gelgarin, I had my first optional boss battle with the guy at the bottom of Treasure Island. I forget what his name was, but he had all these little balls that he could summon to protect him and attack for him, and his attack was really powerful too. One of the balls would protect him and make him almost invulnerable, one would heal him with like, 1,000 HP each change it got, and the others would attack with really powerful spells. At first I tried swapping in and out character and using summon attacks, but that didn't work well... at all. I died pretty quickly. My second time through, though, I found tremendous success with using Felix, Isaac, Jenna, and Piers for the whole thing, and I just used the djinn and their summons very strategically, often using Jenna to heal the other three while they used djinn or summons. The biggest thing holding me back is Felix is cursed with a really powerful sword right now, but it's such a beast of a weapon that it's worth it. Anyway, it was more of a war of attrition, waiting for him to run out of PP to keep bringing balls back and keep killing the balls while trying to weaken the main guy. I wound up getting him alone without any protection or aid from the balls (the two earth djinn that prevent a player from doing anything for a turn were very helpful for this) and using those opportunities to reign hell upon him, and eventually he ran out off PP so his balls couldn't heal him or protect him anymore and I took advantage. Twas a glorious victory that netted be an awesome summon.