The listing, Run Dude (Steam Key) has ended.
https://store.steampowered.com/app/1221280/Run_Dude/
About This Game
Hardcore, bloody platformer with a simple dude.
A variety of traps and 40 increasingly difficult levels.
Spikes, saws, arrows, lasers and much more will stand in the way of the coveted red square.
Run Dude, Run!
Mature Content Description
The developers describe the content like this:
Traps and blood particles