Create unique challenges and race others with a Randomizer Nexus! The nexuses are randomly generated by replacing doors in the Main Nexus with randomly selected levels based on criteria you provide. If you're looking for people to race (or just need help), join the Dustforce Discord and ask in the #races channel.
First, make sure you are running Dustmod. Then open Dustmod and click on "Dustmod -> About -> Set file associations". Now files with the extension ".dflevel" should be associated with Dustmod so opening the nexus should work.
Create a file dustmod.desktop in the path ~/.local/share/applications/dustmod.desktop. You will need to edit the Icon and Exec fields to match the path that Dustmod is installed on your system
Copy the file dustmod-mime.xml to ~/.local/share/mime/packages/dustmod-mime.xml.
Run "update-desktop-database ~/.local/share/applications/" and then "update-mime-database ~/.local/share/mime" to update system configurations to use these new settings.
shrugs. Maybe the linux instructions work?