You can generally follow the same route as a regular Swordsman. The only reason transcendent characters are "harder" to level is because they require more EXP to level.
If you have MvP gears for your High Swordsman, you can level almost anywhere. If not, equip a weapon that is most suitable for the area, such as a Fire or Holy weapon for killing Orc Zombies. Generally, you should be able to get by with NPC gears. For leveling, I'd suggest the generic: Payon Dungeon, Orc Dungeon, Toy Factory, High Orcs.