Here's a pdf index with two english help sheets for the Infinity N5 edition rules. Version 20241229, by Florian Hanke, updated by Justin Sigmund, compiled from infinitythewiki.com Version PDF : https://www.cjoint.com/c/OAcoDLdZXSU
The section on saving rolls has the formula incorrect. Armor is on the wrong side of the inequality. It should be Roll <= PS + ARM|BTS + Cover. As written currently, Roll+ARM/BTS <= PS, armor would be worse the higher its value.