Castlevania Adventure might be slower than Belmont's Revenge, but still is a great game. The slow speed and stiff controls, they didn't bother me at all. The soundtrack is awesome, especially at stage 3 and 4 are my most favorite tracks. Now about the difficulty, it is not so hard. I'll just say fair. If you finish the game once, you can star it from the begining, having the enemies deal you more damage. If you finish the game five times, at the sixth play, every enemy can kill you with one hit. One hit and you are dead!! Even so, i did manage to finish the game and then i just got bored, because i thought that if i finish it at that difficulty, i could get something new or another ending, but nothing at all. You could play the game from the star with the same difficulty, but still it was fun trying to finish the game while you were one hit to get killed!! My only problem with this game was that it was very short. 4 stages waren't to much.