O/S Upgrades are character stat boosts in System Shock 2.
In-Game[]
O/S Upgrades give the player special bonuses and abilities which are unattainable otherwise. They are only granted by the O/S Upgrade Machines, which are very rare, with only four of them throughout the whole game. Only one upgrade per Machine is possible. Installed O/S Upgrades are permanent, thus cannot be undone.
List of O/S Upgrades[]
Cyber-Assimilation: Allows to always find a Diagnostic/Repair Module in wreckages of big (Maintenance, Security and Assault) Robots. The item heals 15 Hit Points when used.
Cybernetically Enhanced: Allows to use two Implants at once, unlocking the second Implant slot.
Lethal Weapon: Increases melee damage by 35%.
Naturally Able: Grants one-time bonus of 8 Cybernetic Modules.
Pack-Rat: Grants access to an extra column of inventory slots.
Pharmo-Friendly: Offers an extra 20% benefit from almost all Hypos (save Anti-Toxin) and the Annelid Psi Organ.
Power Psi: Psionic Burnout (result of unsuccessful Overload of Psi Powers) no longer damages the player.
Replicator Expert: Reduces cost of Replicator items by 20%.
Security Expert: +2 to Hacking skill when hacking Security Computers.
Sharpshooter: Increases ranged weapon damage by 35%, contrary to what the game's tooltip description says.
Smasher: Allows an attack with a charged (held and released) overhand smash using melee weapons for bonus damage. The difference is especially perceptible in the case of Crystal Shard.
Spatially Aware: Causes the Automap to be automatically filled in aboard the Von Braun. In one small area of Operations Deck, aboard the UNN Rickenbacker and further this upgrade does nothing.
Speedy: Increases movement speed by 15%.
Strong Metabolism: Reduces the damage from Radiation and Toxins by 25%.
Tank: Increases maximum Health Points by 5.
Tinker: Reduces Nanite cost of using the Modify skill by 50%.
| System Shock 2 Character Build | ||
|---|---|---|
| Classes | Marine • Navy Sailor • OSA Agent | |
| Statistics | Strength • Endurance • Psionic Ability • Agility • Cybernetic Affinity | |
| Technical Skills | Hacking • Repair • Modify • Maintenance • Research | |
| Weapon Skills | Standard Weapons • Energy Weapons • Heavy Weapons • Exotic Weapons | |
| O/S Upgrades | Cyber-Assimilation • Cybernetically Enhanced • Lethal Weapon • Naturally Able • Pack-Rat • Pharmo-Friendly •Power Psi • Replicator Expert • Security Expert • Sharpshooter • Smasher • Spatially Aware • Speedy • Strong Metabolism • Tank • Tinker | |