Thames

Items found at the Armor Ground: Deathblower 1

Items found at the Beer Hall: Mentsol, Premier Shoes

Items found at the Supply Entrance: D Circuit, Lunar Rod, Mica, Serpent GWhip, Super Googles

After talking with the penguin guy, you can move around the Thames. You can buy new equipment and some items at this same area (named Armor Ground) where you started. You can check a weird motor/van nd talk to Queenie (You can't challenge her yet). Leave this area and you'll be at the Thames main 'map'. Move to the Green Icon that says 'Screw Elevator' and go inside. Besides torturing a drunk guy, you can go to the following floors: B2, where the Dock is; B1, to the Supply Entrance; 1F, to the Deck; 2F, to the Sick Bay, where you can sleep; 3F, the Beer Hall; 4F, the bridge. Choose B1 first to visit the Supply Entrance. At the NorthEast Corner, there's a Gear Shop with lots of upgrades (Be sure to upgrade as much as you can). At the NorthWest corner of the area, a kid asks if you want to show it and if it is for real. Say Yes twice and you'll play a card game against him (More details on the Secrets section). Beat him and you'll get a Super Goggles. Jump on the crate near the kid, then jump over the grate to the East to get a Serpent GWhip. Now enter a door near the SouthEast corner (Before going down the stairs). Fall down moving West to get a D Circuit. Now climb the stairs at the SouthWest corner, then cross the bridge heading North. Head East without falling from the crates or bridges until you see 2 'steps' hanging from the ceiling. Time your jump to get a Lunar Rod. Now head to a drunken guy at the West corner but don't talk to him. Jump on him and stay still, waiting for a moving step with a chest to pass near you. Hit it with your head to make the chest fall and get a Mica. Now go back to the Screw Elevator and choose 3F. At the Beer Hall, climb the ladder and the pipe behind the machine to reach the kid and he'll give you a Mentsol. Challenge the man at SouthEast corner for a card game and get a Premier Shoes for a victory (You can now go back and challenge Queenie for a Deathblower 1, but I'd recommend wait for Citan first). Now go to the bridge (4F) and talk to the Captain. Go to the Beer Hall and talk to him again, watch some scenes and talk to the Captain again on the bridge. After that, go to the Deck and touch the gears with the Cross button. You'll have to fight Dominia (in her new gear).

Haishao can take some decent damage with Nereid Cyclone if you didn't upgrade Brigandier or Vierge, but it has low HP and should go down easily. After some scenes the Yggdrasil will stop at the Thames (Notice that the Yggdrsil now has the same upgrades from the Thames and you just got some cash, so upgrade if necessary), so you should head to the Screw Elevator and watch some scenes, and you'll be back at the Yggdrasil. Climb the ladder to exit the Yggdrasil, but go South to meet Big Joe and a lady. Challenge him to a card game by saying 'yes' and you'll get a LongDarkCoat. Now head to the Beer Hall to watch more scenes, then go back to the Yggdrasil and talk to Sigurd. You can revisit the submarine if you want, but you should talk to the lady at the infirmary, then check the engine room (Down the stairs and through the corridor at the room where Maison is) to watch another scene. Talk to Citan twice, then talk to Elly at the infirmary (This is your last chance to change equipment, so you'd better do it). After some scenes you'll have to fight Dominia (again) piloting the Bladegash. She has a decent evade rate but keep attacking her and use Frame HPs if necessary. After this battle, you'll have to fight Ramsus (piloting Haishao) and Miang.

Use Booster and start attacking Ramsus. Watch out for his mirror attack, and notice Haishao is weak against Ether Attacks, so cast Anemo Burn or Thermo Dragon at him and he should be down easily. After some scenes you'll be at the Thames Sick Bay. Go down to the Deck, then head to the Armor Ground to meet a certain Etone from the Ethos.