The latest version now has steam Leaderbaords there's 4 categories in all.
1 : Highest score!
(This uploads your best score to the global leaderbaords, note that cheating death will reset your score)
2 : Best score 2Ply!
(This uploads your best score achieved in 2 player mode)
3 : Most deaths
(This uploads the amount of times you've died)
4 : Time played
(This uploads the amount of minutes you've played)
Any problems let me know on the forums, I'll be adding starting points next!
Paul