Cool game everything fitted together really nice, The art (especially your key image), sound and overall design created a really enjoyable experience. I especially enjoyed the creatures sound design. The first time hearing them approach was really attention grabbing. I also liked the sprinting down the slope screen shake and music change and the moles bouncing ears on running animation.
Had a few crashes but nothing major however once I was a few levels deep I found the enemies could be quite unforgiving.