Glad to hear you enjoyed it! The random battles is something I should have spent more time on; it's random enough that you can go a while without seeing enemies, or get bogged down and not make a lot of progress.
Check out One Deck Dungeon by Chris Cieslik (published by Asmadi Games). My combat mechanics are based on his excellent game. I made the manual with exactly the idea of both teaching the game and calling back to older games where a manual was essential.