The Chronicles of Menstrualia: Between two worlds by Yuliyan Andreev

Every thousand years, the portal between Hell and Earth opens, and the demon Bastunder steps through with the sole purpose of terrorizing, killing, and enslaving humanity. This time, however, Earth has turned into a total disaster - a zombie apocalypse, military base survival, and gallons of Vaseline.

The only hope for salvation? The legendary medallion Blinblintikus, hidden in the parallel fantasy world of Lummoxavia.

A group of brave (and slightly unhinged) youths from Earth are hurled into a mission across the continent of Menstroalia. Their goal: retrieve the medallion hidden by the evil sorcerer Pussymitree before everything goes completely to hell. But Lummoxavia doesn't greet them with open arms - instead, it welcomes them with biting humor, absurd magical signs, witches named Assdalia, and giants who swing bridge-sized battleaxes.

Will Kiro manage to unlock his true power and stop the apocalypse? Will Biren survive the endless waves of zombies back on Earth? And exactly how many beers does it take to save the universe?

Welcome to a brutal, bloody, and outrageously hilarious journey where horror meets dark humor, and the language hits harder than a battleax!