I've just pushed a small update that makes the battles a bit less random:

• The cards played by the AI at the beginning of a battle are no longer random.
• The enemy deck has been changed for a couple of battles.
• During a battle, the enemy should no longer be able to fill the entire row with cards in a single turn.

I would also like to do a bigger update in the future to add things to interact with in the room and gameplay/cards to go along with it.

As for things related to the ending: That's not something I want to start at the moment. Give me a year to think about it :P