Game owners can access the guide from the steam menu, or the doc folder of the game.
Non game owners can download a copy from team-jungle.com:
www.team-jungle.com/images/doc/gamer_guide.pdf
Thank you
Dark Wish update for January 13, 2019
v1.20 Gamer Guide added
View all patches · Build 3465349 · Last edited March 15, 2019 – 17:35:48 UTC by 
Wendy
Patchnotes via 
Steam Community