Awesome. Yes, like the awesome face. Just awesome. It has the original Madness sprites. Very good anims. The Story Mode is really cool, you could add zombies, more Mag Agents, bosses like Tricky, The Savior or The Auditor (if there are, but I've not reached that level yet, sorry). The Arena Mode could be better, with other training stages, other objects like boxes or something, and Mag Agents too. Good music, but could be better (the best Madness songs were from the first chapters, like MC3b Calliope, MC6 Train Madness, MC4, MC5a... I miss them).
You could add the old and newer Hank's clothes too. The Mag Hank's crab arm and clothes, for example.
I've never found a bug. Some days ago, maybe, it used to become slow after some time or when there were too much enemies in the arena, but nothing else. The best Madness game, together with Madness Retaliation.
PS: Can't wait for Hank and other character's clothes and weapons, and maybe. Come on, Deimos' clothes, Hank's glasses and Tricky's stop sign, will never be enough :P