The sense of scale is insane, you can't even see how big the worm is in one glance. It's also very beautiful, the effects are incredible too, you are here for an epic fight
That being say, I see two problems, the plane is not slow but it lacks a some flexibility, it's a bit too "realistic" in movements to adapt when the big big bosses are extremely close, and that's a problem because of my other point, visibility is not that great, I had problems identifying the sky, the ground and the boss texture when very close, there's also no indication if I'm looking up or down.
But very fun nonetheless! I had a great time :D