Really cool graphics! Don't think I've seen something like this on the gba. Gameplay is somewhat repetitive but the different enemies makes it up. A map would be helpful. It's very easy to get lost. Especially if you rotate the map alot!
Managed to finish the boss. I think I was over-leveled after getting lost somewhat. Each hit made 9 damage and he went down in a few seconds.
Overall, I enjoyed it.