This seems to be a pretty good game. Makes me think of older NES games too.
The graphics are good. Playing some levels over again I found that walls with cracks are where bombs can be used, Best if you use them up close unless you just want half the wall destroyed and a bomb wasted. The bosses were pretty nice with each one summoning a different kind of minion.
The audio was decent. It makes me feel like I am playing an older game. The sword and bomb sounds are very reminiscent of NES game sounds. The boss battle music was smooth and made it feel a bit tense. Would have been neat if for each hit a boss took, the music sped up a bit. Other than that, very nice audio overall.
As for game play. I think having the jump and climb command combined, it would ease some things but I imagine it would make jumping off ladders/vines and other ladder objects a bit difficult since they character would like just grab the ladder again. Could possibly switch the jump and climb buttons though, would make things a bit easier in my opinion.
The sword attack and bomb toss buttons are fine as they are. Nice to see the enemies take more hits as time goes on. Some of the potions can be a bit difficult to get since they are not all in chests but must be obtained by checking everything in the levels, smart idea I think. Encourages the player to spend a bit more time exploring to get more heart potions.
The medals work and are worth the amount of points they should be worth which is good.
Overall, decent game, only issues I really is the jump/climb buttons, and sometimes it seems you jump too high up when you only want to jump up a bit.