The other game I know of by this guy - the second GBA Castlevania game (this is the first PSX Castlevania game, for those who were curious) was horridly easy also. I'd go into a boss fight with half health for the first time and come out with quarter health. In a game I couldn't heal in. This one does let me heal, and I don't think I lost more than 50% health.
Grumble. I want harder games!