Toughness is an upgradable skill in the game Alpha Protocol. It increases your ability to sustain injury. Bonuses include increased Health, faster Endurance recovery, and temporary Damage Resistance. This skill costs 4 Advancement Points per rank.
| Number | Name | Notes |
|---|---|---|
| 1 | Improved Health (Basic) | Increases the amount of punishment Mike can sustain before dying. Health +25 |
| 2 | Resilience (Basic) | Decreases the delay before Mike starts to recover Endurance. Endurance Recharge Delay -1 |
| 3 | Unknown | |
| 4 | Unknown | |
| 5 | Iron Will (Basic) | Provides Damage Resistance (a percent reduction of all incoming damage) and a temporary Health that can extend beyond your maximum Health. When this expires, the bonus Health is lost. |