An update to Rochard has been released (1.04). The patch allows to customize keyboard controls. You'll find the customization menu under controls menu.
The Steam Cloud bug in the game which prevented the local save game from being uploaded to the cloud has been now fixed and the cloud files are updated using local save game when running the game. This is completely transparent to the player and no save data is lost in the process. Most settings such as the customized controls are stored in the cloud, but display resolution which is computer specific is not.