To get the Royal gear once you get your glider in Tears of the Kingdom, you need to get a carrot. I mean literally you need a endura carrot to get you all the way from Lookout Landing Skyview Tower to the the top of the castle. You will need Fire Fruit to get Link’s Champion ‘s Leathers from the main throne room. You should also have dazzlefruit to stun one encounter you will face that running may not be enough.
Watch Strategy in Action: How to get the Royal Gear – Legend of Zelda: Tears of the Kingdom
Getting the Champion ‘s Leathers from Main Throne Room
Once you take off and make use the bar you have to get the castle, use the endura carrot to reload your entire stamina bar and get to the top of the tower opening. Then, grab the bow and other treasures on your way down to the throne room. Once in the thrown room, as if to throw your weapon, click up and select fire fruit and throw at unlit fire holders. Once lit, you get the leather from the back of the throne.
Next, you will need to grab more gear and head outside. Head straight then to the right and glide to Princess Zelda’s Room (the area) shown in the video. Once there, grab the other weapons and the Royal Guard Cap.
Next, head toward the Hyrule Castle B2 to a path with monster you cannot beat if the game just started. You will need to stun them or just run. You can stun the monsters with an arrow paired with Dazzlefruit but you still have to run. I’d head all the way up to the shrine to autosave and let the monsters ignore you. Then jump down and through the path below you. When you get all the way to the bottom, slide the book shelf to enter the King’s Study and get the Royal Guard Boots.
From here, we teleport back to Lookout Landing Skyview Tower. Shoot up to the sky and head toward the castle entrance gate to the first entrance on the path. Up the gates with Ultrahand and head left down the stairs. Glide to the point and use the power Ascend on the board on the floor. Create a walking path with the 3 planks and get the Royal Guard Uniform. Cheers!