It's been a few years since I finished the first game ("the Legend"), and while in my memory the first game was a bit better, Armored Princess gives you exactly what you expect from a sequel.
A new world, new units, some new mechanics and some more story.

The main story is pretty basic. You venture into a new world to collect the stones of power so that you can save your homeland from a demon invasion.
The writing is never too deep, but the sidequest do have some entertaining storylines that are unusual for the genre (e.g. collecting information on how different people use soap [spoiler: not for washing], batteling a dragon that eats drunken dwarfs to cure its hangover or talking to living stones from outer space).

I also love the bossfights in this game, as they require some tactics and feel quite different from the usual battles. On normal difficulty, there were only 2-3 fights in the game where I needed a second attempt though, and usually only because I like to play lossless (which is almost impossible in bossfights, so I get an entirely new army for them).

The soundtrack is almost the same as in the first game with only a few new tracks, but that is fine as the soundstrack is still gorgeous.

Overall, I can recommend this game for cozy sessions where you just want to chill and dont think too much.
I definetly enjoyed it.