I didn't play the game fully. Time doesn't allow me to do items like that. I only went for the first few maps and then stopped for a bit, unfortunately. I didn't see the controls, I must have ignored them. My apologies for that.
You see, in the original Castlevania games, Soma was really smooth, animation-wise, movement-wise, all that. The game here, he doesn't have that flexibility. Of course, it's RPG Maker...Unfortunately. I don't know anything you can do about that, unless you can find a multiple frame script, but that may cause compatibility problems.
You should add an introduction. Starting at the castle isn't really the greatest thing ever. And instead of message boxes telling what I obtained, you can use pictures. They add up more space, but they'll be flashy and cool. In fact, once you reach a new location you should have pictures (I haven't reached to a new location so if you have done that, oops, my bad).