Hello, i've found a very amusing bug at the end of Wolfling. Evidently, it is possible to overjump the final cliff and thus fall into the chasm, but suprisingly land at the leftmost door of the castle.
To see it for yourselves, try this puNES savestate: http://oscomp.hu/depot/wolfling14.p02
Here is the method to repeat it:
Little explanation: take a momentum on the first platform, jump, but land on the second platform at a distance from the third, to be able to jump again and jump over the third platform, but right before you exit at the rightmost point of the screen, press fire to bark and gain some extra momentum.
And here is another savestate which is right before the ending, for trying purposes: http://oscomp.hu/depot/wolfling14.p03