Frustrating stage designs. Lots of things that just instantly kill you. Didn’t like the bosses much either. Especially Agile, Serges, Violen and the worst offender Sigma, were a huge pain in the ass to fight.
I liked the suit enhancements less than in X1 too. Targeting Helmet is tedious to use and the Armor upgrade is pretty lackluster too. And it felt like the Double Shot X-Buster was a downgrade from the X-Buster upgrade in X1 as well.
The Air-Dash was alright, although in most cases, a dash into a jump would suffice in most cases. But it did have its uses.
I would have liked to be able to use an Air-Dash after a Dash -> Jump, however that's not possible.
The boss powers were alright I guess.