Can this mod be used along with others? I hope not, because it would make leaderboard not worth anything. If other mods make your gameplay easier, then it's impossible to compare your score to others who are not using the same mods or they are just playing vanilla game.

Hi,
Right now, it is one leaderboard for all games regardless of which mods are used. However, it will be split up to different leaderboards later on, when we have more users.

In the meantime, it is possible to create a custom leaderboard if one wants to have a leaderboard with their own rules, such as "only vanilla".
View custom leaderboards