While your query mentions a it is important to clarify how you can legally access the game: Official Platforms

Like most roguelites, if you die, you start back at the beginning, using what you learned to get further next time.

The game is officially available on Steam for PC VR headsets (like Valve Index, HTC Vive, or Oculus Rift via Link). It is a paid title, though you can often find it on sale or try it out via the Steam refund policy if you meet the playtime requirements.