Glad you loved Act 1! The Steam version of OSH Act 1 will be getting updates for the next several months. We have a pretty big update for it coming in a few days actually. You will have to pay for Act 2 when it is released, which will be handled as DLC on Steam, though we expect it to be of similar scope and price as Act 1. Of course, supporters on Patreon and Substar will get preview builds of Act 2 as it's developed.