Awww, thank you! For both the kind words and the detailed review! Posts like this really do make my day and motivate me to push myself even harder on each week's updates. Solo devs live and die on positive feedback, so I really do appreciate it :)
As to your points (and I'll try not to get spoilery here):
1. Yeah, making meaningful, branching choices in a game this size for a solo dev is... rough... to say the least. However! I do plan on having four major endings to the game (one of which will be considered "canon" for future games), each of which will have numerous ending variations depending on particular choices, plus a couple of "minor" endings that will allow players to just "nope" out of the game ;) Act three will streamline things a little, too, so expect more world-altering decisions there.
2. The dungeon will really come into its own in Act Three. Dun dun duuuun!
3. There will be three acts, plus an epilogue :)
4. I actually have a few different draft ideas for the next two games, but currently I'm leaning towards the protagonist from CK1 going missing in CK2 and players play as a new protagonist trying to find him and figure out what happened. But who knows? Lots of ideas! And the next game won't be CK2 - I need to take a break and do a different game first so I don't burn out on these characters and settings.
Hope that answers all your questions, but if not just let me know and I'll do my best to clarify!
And thanks again for the glowing review :)