Need 2 simple keys if you haven't unlocked royal waterways yet, 1 if you have. Explore royal waterways until you get to the junk pit or whatever it's called. Swim over to the left until you find a chained, gold coffin thing. Unlock it with a simple key, and then dream nail the dude that comes out. Go right in the dream realm until reach 3 gold doors, and a caged door. To open the three doors, beat their bosses. Beast tamer and hollow knight not required. Beat those pantheons (1,2, and 3, order doesnt matter). This will unlock the caged one (pantheon 4). Beat this one. Go up as far as possible until you reach the top of godhome. There, you can do pantheon 5. Ideally do this with pure nail, all charms unlocked, Max soul fragments and mask shards, Max charm notches, after basically everything else in game.
To practice bosses, go down in godhome and then left. Go in the door, and choose a boss to fight.
For help with pantheon 5, go out of practice room, and further left. I don't know the requirement of this door, so look it up.
Need 2 simple keys if you haven't unlocked royal waterways yet, 1 if you have. Explore royal waterways until you get to the junk pit or whatever it's called. Swim over to the left until you find a chained, gold coffin thing. Unlock it with a simple key, and then dream nail the dude that comes out. Go right in the dream realm until reach 3 gold doors, and a caged door. To open the three doors, beat their bosses. Beast tamer and hollow knight not required. Beat those pantheons (1,2, and 3, order doesnt matter). This will unlock the caged one (pantheon 4). Beat this one. Go up as far as possible until you reach the top of godhome. There, you can do pantheon 5. Ideally do this with pure nail, all charms unlocked, Max soul fragments and mask shards, Max charm notches, after basically everything else in game.
To practice bosses, go down in godhome and then left. Go in the door, and choose a boss to fight.
For help with pantheon 5, go out of practice room, and further left. I don't know the requirement of this door, so look it up.