Forbidden Arms
Are you strong enough to wield a demonic weapon without giving in to its powers? In Forbidden Arms, you will play a master assassin who overcomes challenge after challenge by piling his enemies onto a bloody heap. With a number of special abilities and a ton of upgrades for your hellish sword, you're starting to think that crossing over to the dark side isn't half as bad as it's made out to be.
Read More
I enjoyed this one for a bit, but the attacks being on the mouse and going towards the side the mouse cursor was on began to get annoying. And once I unlocked the endless stage and wasted quite awhile killing things only to find out I didn't get to keep those soul points (the currency for the game) I got disillusioned and gave up on it.
Actually the game was updated to allow you to keep souls in endless stage
Update