I had a pretty strong weapon: an automatic crossbow. I kept stuffing the big bad guy with arrows until it looked like a ball of arrows. The damage counter goes up indefinitely, I got up to more than 1200 dmg.
So is it the end? You reach a boss and run out of time and that's it?
Does this mean you stop making progress after ten and a half minutes (the game is limited to 12 minutes and the boss appears at 90 seconds before the end)?