If two players access a permanent increase Glyph (either Strength or Accuracy) at the same time, the Glyph will never become inaccessible. It is similar to the regular Glyphs, but does not "turn off" after the fourth use. You can continue to
charge up a stat as much as desired. After the bar is full in the stats page of your character (for Strength or Accuracy), a small red bar will appear to the right of the stat. If you continue to access the permanent increase Glyph, the bar will slowly extend all the way across the stats page (behind the weapon/inventory screen). With a fully maxed out stat, enemies usually fall with one hit. Strength affects short ranged attacks; Accuracy affects long ones. The permanent Glyph cheat works because the game is programmed to disable the Glyph with after one use. Having two people access it at once means the Glyph is never used just once, meaning it will always be available. The regular Glyphs (Health and Conviction) are programmed to disable on the fourth use. Thus, if you use a Health Glyph three times, then have two people use it at the same time, it will be used overall five times and it will always be available, just like the permanent ones. This may make some of the Boss fights a little easier.