It's great!
Bionic Commando ReArmed 1&2 are THE best modern-day side-scrollers.
If you like Contra, or Gunstar Heroes, or Metal Slug-- basically if you like hitting a giant robot in it's weak-point for massive damage: You should buy these games.
ReArmed 1 had a great enthusiastic 80s buddy cop-movie vibe to it. It was really silly, the swinging was really fluid n fun to get around with, and there were a few good reasons to go back n play it again and again.
ReArmed 2 still has a great dumbass sense of humour, but not QUITE as much. It's like 50% serioues marine dudes and 50% jokey craziness this time. That's mainly why it's 4 stars n not 5, cos that's something I really loved about the first one; how dumb it was.
The swinging is a little hard to get into, but it's actually better than the first one was. Mostly because they added jumping. By the end of ReArmed 1 you could kind of spot the pattern of what you COULD reach n what you couldn't, so it felt a bit template after a while. But with jumping, you don't have that problem- because now the cieling can be any distance away. It makes the whole thing a bit more interesting.
It's not a huge Super Mario jump, it's just little tiny hop. but it mixes things up enough.
Lastly, this game has LOADS OF SHIT TO FIND AND UNLOCK. I completed the first level an it said like "you missed 3 secrets, you missed 2 upgrades, you missed the extra life, you missed 1 yoshichi". And that's like every level for about 20 levels. So there's a fat bagload of upgrades n powers n stuff to go back and pick up on your second run through.
Oh and the boss-fights are allright. They're good, but not mind-blowing. The music is pretty fucking badass though.
If you loved the first one; buy this. It doesn't kick the shit out of the first one, but it won't dissapoint you either. You should definately buy it.