Perhaps one of the lower grades I'll give to a game I finished without much hesitation, but man the wind kinda got taken out of my sails by the end. The combat (interacting with enemies at all, really) was the worst part of the game, and the increased emphasis in the closing hours just felt real bad.
Actually exploring and getting powerups was fun for a while though
A pretty dramatic improvement over D/P, more so than mid-gen upgrades in the previous games.
The Nuzlocke experience is hurt by some difficulty spikes pretty early on along with the computers tendency to confuse ray and self-destruct
The only other issues are native to gen-4, with typing distribution being pretty uneven, but it's improved somewhat here with some changes to routes