Some rooms just don't exist yet, but it is playable all the way through. After collecting five tablets, you go to the healer and he'll give you the sixth tablet and a key to the final boss. That's my bad for not making it clearer, haha. I just ran out of time dealing with an ear infection and forgot to add the text saying "Looks like this room is blocked off".
That said, I'm thrilled to hear you enjoyed it :3
We definitely are looking at fleshing it out, including better collision effects, a variety of enemies, and maybe twin-stick-shooter elements, at least for bosses.
Future updates will be made under https://shining-kitten-games.itch.io/