As a roguelike game it works perfectly good.

the only thing that could have been added is a plot behind this because i really like to think what's the matter with that winger skull man hunting me down (it scared me that first time)... and why am i digging an abyssal ruin to start with ? To pick that winged skull's reaper and put it in my collection of course !

Besides that its pretty cool, i managed to do everything the game has to give, good difficulty with optional extra challanges. Short games that gives lots of fun, nice work.