Is the expansion Mode available only after finishing the game?

Each Roguerunner phase is unlocked after completing a specific level in the campaign. Phase #5 will require completing the level "Too Close To The Sun" containing the Wingsuit mechanic, which is this expansion's gameplay theme. Additionally, to make the expansion more accessible to the Player, we have add a new button in the Roguerunner.exe menu that will let players skip previous stages and start a new Roguerunner run immediately from Phase #5.