Displayed below are the top 100 Titanbreaker (Temple of Dreams before) Heroes from Season 1. It is measured by Boss Kill Count done in a single game with a single Hero, multiplied by the difficulty setting you chose. When players have the same highscore, the one who got the highscore first will be ranked better.
There also exists a Ranking showing the best Players, measured by the sum of achieved Boss Kill Score across all of their Heroes.
Titanbreaker - Player Rankings - Season 1