Stamina implant

The stamina implant is a plot device in Strife. Stamina upgrade vouchers are items that can be offered to Gerard, who will increase the player's stamina stat by 10 points by upgrading the player's implant. In the early stages of the game, stamina upgrades are received from Macil in exchange for completing his assignments; later on, as the player travels further afield they will receive stamina upgrades directly when important objectives are completed.

This item is more beneficial than the accuracy upgrade because stamina increases both the player's maximum health and the strength and damage of the punch dagger.