Purists will argue that using a trainer "breaks the experience." And they aren't entirely wrong— but context matters. Here are three legitimate reasons players turn to Fling’s trainer years after launch.
Allows you to defeat any enemy with a single shot or strike. Survival & Environmental Features Infinite Gas Mask:
For those who just want the story, One-Hit Kill turns your throwing knife into a death sentence for even the mighty Librarians or the final Biomass entity.