Re: Body Stacking: It took me a while, but I finally found what this was reminding me of:
Nemesis The Warlock, a very obscure C64 game that also centered around a simple room with platforms, and slaughtering the tons of guys who dropped into it.
Never heard of that game before. But a body stacking mode would be fun to add some day in the future.
The controls are nice and responsive, and for me, personally, mowing down dozens of tiny knights with a lazer and beating the survivors to death with the stock of my bazooka is satisfying regardless of knockback or ragdoll physics. And giving us different objectives and metrics for our slaughtering is just icing on the... murder... cake?

I couldn't have said it better myself.
BTW is there any blood in the game? (except the title i mean...)
I tried adding some at one point. I didn't like how it turned out at all, so I scrapped it.
Everyone seems to be posting scores from the first arena (the one without archers). Do you think the game is more fun without archers, or do you just have more impressive scores from the earlier rounds?