played through all levels, and despite the complains here, i'd say it's pretty solid, specially considering that it's a first release
artwork is very good, mechanics are okay (save for a few tweaks on the jump mechanic, in order to not make it so "deadlocked")
the platforming is simple, yet satisfying, the enemies could get a bit of tweaking, specially over how they recoil after taking damage (i.e. zombies and blue skeletons)
for a first release it's surprisingly great, will be tuning in for more releases, though would it be possible to add a sprite gallery for the animated scenes?