Thanks! I'm glad to hear you liked Yorna and MonGirlSexpedition ^^
Puzzles are a way to switch gears between combat and other activities players can take. Cranking up puzzle difficulty may not be the best idea since Yorna and MGS aren't dedicated puzzle games, and the increased difficulty may be annoying to players who aren't into that. So, no, I don't plan any changes to puzzles.
As for trying out the game development, go for it. There are a lot of free engines geared toward specific genres and some of the options require about 0 coding experience to start out. The only advice I can give from my experience - it's better to start out with something small.