Er, loads of ambushes, as in random-encounter-like? That doesn't sound good, it's not a JRPG after all. Combat with enemies you can't see first should be used sparingly...
"We're all humans." Let's try to be more! "The chief obstacle to the progress of the human race is the human race." "If you're falling off a cliff you may as well try to fly, you've got nothing to lose."