Thanks for playing the game! Glad you liked the graphics and sound.
About the more frustrating parts: Learning how to conserve your weapons is a big part of the game, so using the traps, and even other enemies to do your job for you is a good idea. Using spells wisely, not hitting the walls and being mindful of breaking crates with your weapon instead of a kicked goat is also good.
And a little tip about the secret walls: you can guess where they are by the placement of the torches in each room.