Phantasy Star (2022 Retranslation): Part 16: The Final Battle Against Lord Lassic
2Solving the puzzle to reach Lassic, the Alis Alliance have reached the site of the Celestial Castle.
It's a straight path towards the castle itself. The old men in several of these houses along the way will either not talk to you, or warn you of the upcoming dungeon.
The last house before the castle? It contains a SERPENT! Even after you beat this thing, you can keep fighting it for as long as you enter into its own house.
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Here's the map to the castle fortress:
https://gamefaqs.gamespot.com/sms/588116-phantasy-star/map/2496-air-castle-fortress-map
The path to the end is pretty linear. Basically follow every new staircase that you find along the way, they'll take you up and down between basement floors.
Halfway through this dungeon, you will fight a Shadow being. It's just a dark Dr. Mad, but this boss is meant to be a Lassic's guardian, though this retranslation just calls HIM "Lassic".
You take him down, and he'll threaten you of the REAL Lassic's power.
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At the very end of this dungeon, you'll finally face up again the Lord of Darkness, Lassic! Whether or not you feel confident in defeating him, prepare to go through hell fighting him.
This is kinda where my modding benefits from this retranslation ran out, as it took me a few times to actually beat this boss without losing my entire party. Prioritize keeping most of them healthy with healing magic and items. None of your defensive magic will work so focus on offensive magic to try and beat Lassic as soon as you can.
One of Lassic's favorite attacks is a lightning spell that will hit all four of your party members without fail. Sometimes they'll do pitful damage, and other times it can go over 70 HP.
Lastly, the Magic Crystal/Damor's Crystal from the Baya Malay Tower is meant to protect the party from taking EVEN MORE DAMAGE than what was shown in this video! Hopefully you took the time to pick it up before flying off from the top of it.
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Eventually, I was able to defeat Lassic, however, his dark spirit was to still live one and eventually he'll be fully resurrected.
At long last, Alis' brother Nero was avenged, and peace had returned to all of Algol. Now it's time to return to Motavia's Governor in Paseo and tell him the good news!
Now returning, on the other hand, may be its own trouble. There's no to manually leave the flying castle island that you're own. You either need an escape item or have enough MP left for Alis to Exit back to a church. To help a bit more, you should also have Lutz/Noah use Exit magic if he still has MP left (let alone if he's still alive) to leave the dungeon, then you can follow that up with the church leap to bring back to stable land. I thankfully had just Alis and Lutz left just for this!
Revive and heal your whole party and then plan one final trip to Motavia to find that Governor! The main villain is gone, but this game isn't quite over, yet!