Stamina implant

The Stamina Implant is a bonus the player can receive in Strife. This bonus is considered much more beneficial than the Accuracy Upgrade because this stat affects both the player's health cap, and in addition, the strength and damage of the Punch Dagger.

The Stamina stat is a variable that adds [current stamina] to 100, meaning the player can upgrade himself to the point he has a natural 200 health cap. Also, the higher the stamina, the more likely the Punch Dagger will kill high level monsters in few hits. Some players have even stated they can kill an Inquisitor in one lucky Dagger punch at a 90 Stamina stat or higher. This tends to make the Punch Dagger more and more favored in many levels in Strife. The additional health also gives good assistance to using the Sigil, especially as it gets more and more complete. The Surgery Kit's effectiveness becomes much more appreciated with higher Stamina, since it will fully recover a player per use.

A side note is that in Strife-supported versions of ZDoom, the player can give themselves the Stamina Implant with the GIVE console cheat. Although the player's punch is unaffected by the stat, their natural health cap still goes up whenever given one, and this works in Doom, Heretic and Hexen games in ZDoom in addition to Strife itself.