Enemy list
Chest list
Final Fantasy 2 throws you into combat immediately. Firion, Maria, Guy, and Leon flee the Empire's attack on Fynn, but four Black Knights catch up. This fight is unwinnable. Keep attacking until you lose. This chapter has 4 chests between Altair and Fynn.
Altair
You'll awaken in Altair with Leon missing. Exit the room and go inside the throne room next door.
Talk to Hilda in the throne room and she'll mention the password Wild Rose. Ask her about it, then Learn it.
Before leaving the hideout, head downstairs and go to the left side of the room to pick up a chest containing a Potion. This chest becomes permanently missable after completing Mysidian Tower.
Leave town and grind enemies outside until you have around 700 Gil. FF2 doesn't use traditional EXP; characters grow by using weapons and magic repeatedly. Spam Cure outside battle to level it fast. Inn prices vary based on how much HP/MP you need restored.
Return to town and visit the shops. Give Guy a sword since he's your physical attacker. Buy Leather Gloves (50 Gil each) for everyone else.
Visit the magic shop and buy Cure, Fire, Thunder, and Blizzard (100 Gil each). Teach Cure to Firion (he'll be your white mage) and give the offensive spells to Maria (your black mage).
Gatrea
Walk directly north from Altair until you reach Gatrea. There's nothing worth noting here, but entering marks one of the 27 locations needed for the Adventurous Wayfarer trophy.
Fynn
From Gatrea, walk west around the lake and follow it back around to Fynn. But there's no Inn in Fynn, so heal up before entering.
Fynn is occupied by the Empire, so avoid interacting with soldiers. Go north and when you reach grass, take a right hugging the trees. Follow the outside wall south until you reach the pub.
Inside the pub, talk to the bartender on the top right and ask him about Wild Rose. He'll recognize you as a rebel and reveal a hidden passage.
Follow the path and open the three chests. Talk to the wounded soldier in bed and ask him about Wild Rose. He'll give you his Ring as proof that you found him.
Joining the Rebellion
Leave Fynn, retrace your steps back to Altair, and visit Hilda in the Rebel Hideout. Show her the Ring.
Hilda will give you your first mission: obtaining Mythril for weapons. You need to find a man named Josef in Salamand. Learn the Mythril keyword.
Talk to Minwu and he'll join your party as a guest character. He gives you a Canoe for crossing shallow water.
Speak with Hilda again and she'll give you two more keywords: Dreadnought and Airship.