I stayed on about 6 fields most of the time, in the next play through I would be more bold.
Overall I loved the art. Adding fingers to the hands or more details in a slightly higher resolution pixel style would for sure enable more gorey details. Eliminated body parts could be "ripped"off/decompose/ turn to barren bones. I´d be happy support you, if you need an artist.
Tile use for the blood parts would increase difficulty. If the game becomes longer it could be balanced with regeneration while moss covers it.