Needless to say, the difference between Link with the Master Sword, and a badgeless, tier 1 weapon Tetra... is VAST. So, unless you got Tetra in Adventure Mode, I suggest having Link do the heavy lifting, and send Tetra to capture keeps or something. (It takes a while for her to do even that...)
I would actually do everything with Link here, except that the map layout has a bunch of awkward dead ends so it takes a while to get from place to place.
Master Sword is a little bit less convenient if you use character switching. This is because the AI can't help but take damage whenever it gets into a fight. It's possible for the AI to take less than a quarter heart of damage, invisible on your life meter, but that's still enough to not get Master Sword beams. Still, you can get a lot done just using the charged C1, so it's still a great weapon.
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