๐ I'm a big fan of Minish Cap, and you've done a great job of capturing the style in such a small resolution. It's impressive how much is in the game considering the time limit.
The red slimes are meant to be a little more difficult if, so you should try to kill them fast, or they'll come lunging after you! As a "reward" they are more likely to drop hearts.
A quick fireball is enough to get rid of them in an instant!