1. amount of time it takes to get to 1, 2, 3, 4, or 5 stars
2. death%
3. get killed by shark
4. kill the shark
5. get a dance at the strip club
6. kill a random person

The way adding a category works here is you submit a run to "Non-existent category" with the name of the proposed category and its rules in the description. That way the LBs don't get flooded with empty categories nobody wants to do.