Oh ok.
I thought you wanted to keep it a secret!
It lasts 16 waves!
You get a minimum of lives and the monsters just bombard the living 5H1T outta ya.
It's a lot like Monster arena but with newer arena style maps and more & smarter monsters.
They are working on extra bonuses for surviving the wave and extra life relics.
There are Eants (longlegged, lumbering oafs), Cyborgs and the usual assortment of MH baddies.
At least there is plenty of ammo, health and armor around.
It's a real pain with only 1 or 2 players, so the more the merrier.
My take on it is that the scenery never changes and all you do is kill and avoid being killed.
I prefer actual "hunting", sniping and regular old death match but this is definitely worth checking out if you like a good white knuckle, mouse crusher!