Blood Of The Werewolf is hard. Bloody hard. Channelling the platformers of yesteryear, this snarling retro-tough experience doesn't hold back as you jump around and brutalise all manner of gothic nasties, but can leave even the most patient player frustrated with annoying knockdown and trial & error. IndieGameStand are currently running it as their latest Pay What You Want deal - you can pay a minimum of £0.63 for a Steam code, or more if you can afford it. Remember that it has featured in a few bundles recently, though, so don't accidentally double up.
Thanks to mATTEH @ HUKD!