a new genre has born : 1-hit-kill spike trap avoiding game
Sounds : the developers are lazy. There wasn't much change of sound compare to X4 except the soundtracks. And that voice shouting boss's name is hilarious(might cause of the strange translation of boss name though...)
Gameplay : good-old megaman style with some dumb boss and LOTS, LOTS OF SPIKE TRAPS.
Getting spiked to death must be the most frustrating part of the whole game.
But if your reflex and skills surpass these evil spikes, or you're a big fan of Megaman, then you might enjoy playing through the game a few more times to unlock stuffs like armor, weapon, upgrades or even the 3 operator to play (though they are just the same as X, Zero and Axl with a different voice, model and lower stats...)