Really? Huh, I assumed it was like Mass Effect 1's difficulty settings... well then just take what I said before with a different example :) Seriously, get Panzer Dragoon Orta. It was on the Xbox, pretty rare now, but if you can find it... ho man, it's gaming perfection. Beautiful graphics, long and pretty levels, great boss fights, simple to use but effective control scheme.
Basically, your an anime girl riding a sci-fi dragon through on-rails missions. You can roll and dive and pull up and such, but you can't actually stray from your path. Your only other movement option is your speed. You can dash forward, or throw out your wings to stop. You can fire an unending volley of shots, or lock onto multiple enemies to send homing lasers screaming through them. Through each level, you'll have the chance to steer your dragon into little tokens that upgrades the form he is in at that time... Yeah, your dragon can transform, and this is a very important skill.
Your Base Wing is the standard form, medium sized, good firing, and can handle a few dashes before getting tired. Then there's Heavy Wing, massive and less agile, with no dashing, and very powerful but slow lock-on. Then theres Glide Wing, which is basically a dragon butterfly, darting quickly, able to dash and pull back many times, but with no lock-on, only a weak laser.
In any level, you are using ALL of this simultaneously. Enemies firing at you? Glide Wing rolls to the side, dips under them, pulls up over the next shot, careens past the rest, then dashes forward, transforms mid dash into Heavy Wing and then blasts the ship to pieces, transforming back to Glide Wing, pulling back to avoid the next volley, transform mid-dash to Base Wing and lock on while dodging again. Avoid his moves, expose his head, transform, dash in front, transform, unleash blinding super attack right into the weak spot.
It's beautiful man. Just beautiful.