Chainsaw Warrior (ChW) is a deadly game that is similar to Dungeonquest (both originally board games from Games Workshop). While ChW is a pure solo game, the fail ratio is definitely comparable.
The thing is, ChW cannot just kill you with traps or monsters, you also have limited time. Time is represented by cards, combat rounds and events that usually remove a certain amount of your time. So it is definitely possible to be healthy, well equipped and bearing fully loaded guns but still lose because you are somewhere in the building and Darkness (the end boss) is somewhere else and just starts swallowing New York into another dimension, including yourself.
Darkness, the arch enemy you soon come to hate, can only be defeated with your trusted laser lance or a suicide vest (that as the name says, kills yourself as well). But who cares about Darkness? It is more likely that a blob of slime swallows you whole before you even get a glimpse at the guy who is responsible for all of this.
A fun game for masochists.