I was testing out a new build by making all the floor 1 enemies give millions of XP. Then I died by stacking pact of fleeting life. Now I have the high score on the leaderboards of 740 million. This was unintended...
Yeah, the global leaderboards are kind of meaningless when it's that easy to cheat. People can also get around permadeath by copying save files. Friend Leaderboards are really the only ones worth looking at. Assuming you can trust your friends.