Ha ha ha ha...that's actually really funny. Yes, the trigger for the boss is based upon time in the level, not number of kills. Of course, if people do this, they won't have enough points to unlock the trains (although once they pass 2M, they could start using this method to get to the final boss, I suppose), so it's not likely a big problem. But thanks for the heads-up. Maybe I'll add a second condition that examines number of kills on the level and require a minimum (but that would also require a whole new set of variables that I'm currently not tracking.

Thanks for letting me know, though! It's how the template worked, and I hadn't even thought of potentially needing to change that part of the code. :)