If you are interested in the upcoming new game mode, you can experience it early in the Betas branch. Find Rune Gate in the game library: Right-click -> Properties -> Betas tab, enter the code: 123456789012 to unlock it, then switch to the new_mode branch.
After entering the game, restart your run or start a new game to choose the Retribution mode. This mode supports leaderboards and is relatively challenging. You can find specific information upon entering the game.
If you have any feedback, you can make a post in the community or let me know in Discord
FYI, Leaderboard is only active on Challenge difficulty.