Now PC version of the game fully supports Nintendo Switch Pro Controller in wireless mode. Just connect the gamepad to the computer and start the game.
P.S. For the gamepad to work correctly in the game, please disable Steam settings for the gamepad in this game (unfortunately it does not work when connected via cable).
Thanks for the testing: Dink, Lordego and NinjaRabbitStudio.
Please let me know if you find any problems.