Most of the zone is self explanatory and fairly easy. The end fight makes up
for this though. When you finally get to the end room with Wonder Girl and
Giganta, you need to run into the crystals in the room to disrupt them. They
knock you around, but that part is simple. Now, Wonder Girl and Giganta begin
their battle.

Your job is to protect Giganta while attempting to defeat Wonder Girl. If you
are doing this at level, Wonder Girl does a lot of damage when she turns her
attention to you, so the best way to survive this is to get up close and attack
Wonder Girl then as your health gets low, move back and use a ranged ability and
heal up with a consumable. Go back and forth until Wonder Girl is finally
defeated. Even if Giganta has been knocked down, you can still finish the fight
and the zone.

If you're a level or two higher, the damage is far less and you can just get
in there and knock out combo after combo to slowly work down Wonder Girl's
health.  It's still a long fight, but being higher level helps out a lot.