Tower Princess

As i started with the sword in all honesty i would have said use the sword its better for this however upon leveling the musket class (4 points in damage 1 in ammo 3 in shotgun blast 2 in explosive) i will now say rather confidantly that if you're having troubke getting this use the musket. It may be tougher to level up but if you do sword first then the musket class second having all the vitality and cartographer upgrades will very much increase the odds of your success with musket as it's not very good right away. On to whats required you must find all 8 princesses/princes and defeat the last boss. You will be doing plenty of runs if you want the completion as leveling sword and musket takes a lot. The boss in itself isnt too bad just very high HP thats why if you struggle with the sword to get this level up your musket class and it will do wonders for you almost every run i used the musket against the dragon i didnt take damage in the fight at all due to the muskets ranged nature.