Combat Strength - Increases your damage with melee weapons--batons, crowbars etc. If you're using stealth tactics, this aug can be useful for stabbing enemies in the back, ensuring a silent kill.

Microfibral Muscle - Increases lifting strength, allowing you to life heavier objects. You can use this aug to move large crates around, creating alternate routes through areas or even building walls for cover and protection if you want to avoid fights.

Ballistic Shield - Increaed protection from projectiles. If you'd rather charge in with guns blazing rather than sneak around in the shadows, this aug is absolutely vital for survival. It's almost impossible to shoot and avoid getting shot at the same time, so you'll want some protection while you stop to aim your weapon during close quarters combat.

Energy Shield - Increased protection from energy. This aug isn't very useful. If you don't want to be stealthy, you might consider buying this for protection against enemies with energy weapons. It's not quite as useful as the Ballistic Shield, though.

Cloak - makes you invisible. This aug won't help you out very much. It's only useful if you want to be stealthy, but you're too lazy to waste time hiding from enemies.

Radar Transparency - makes you invisible to bots, cameras etc. This aug isn't useful either. Most cameras are easily avoided or deactivated, and bots can only see what's directly in front of them anyway. As long as you don't run around in front of cameras and bots, you don't need this aug.

Synthetic Heart - Upgrades performance of all augs. This is the most generally useful aug in the game. When activated, it upgrades all of your augs one level (it can't increase an aug above level four). It drains lots of energy, but the increased usefulness of your augs is worth it.

Power Recirculator - Reduces power cost of all augs. If you're worried about running out of bioelectric energy, install this energy saving aug. Of course, as long as you're conservative with your augs and don't keep them constantly activated for no reason, you should never have to worry about running out of energy.

Aqualung - Increased air capacity for swimming. This aug is useless. You rarely have to swim long distances, and water routes are usually optional. If you really think you're going to need to hold your breath for a long time, buy a level of the swimming skill. It's much cheaper than wasting an aug spot on this.

Healing - Healing rate increased. Make sure you install this aug. Even if you try to avoid combat as much as possible, it's always a good idea to be prepared for some emergency healing just in case.

Environmental Resistance - Increased protection from environmental hazards. This aug isn't very useful. There aren't very many environmental hazards in the game, and you can survive those with hazmat suits and the healing aug.

EMP Shield - Protection from EMP damage. This aug protects you from attacks that drain bioelectric engergy. This aug really isn't very useful. There aren't very many enemies or obstacles in the game that drain energy, so take my advice and don't bother with this one.

Targeting - Provides target information and increased firing accuracy. This aug is a must-have. You probably won't even pay attention to the target information it provides, but increased accuracy is great if you want to make the most of your precious ammo.

Vision Enhancement - X-ray vision, night vision etc. This aug is nice for sneaking around dark areas--you probably don't want to alert guards to your presence by shining your flashlight everwhere. You also can't beat being able to look through solid walls.

Aggresive Defense System - Protection from missiles and grenades. This aug makes missiles detonate in mid-air before they hit you. Missiles are usually pretty easy to dodge at long range since they move fairly slowly, but if you're being attacked by missiles at close range, it can be helpful to make them detonate close to enemies instead of close to you.

Spy Drone - flying drone with a camera and a small weapon. This drone really isn't useful at all. Don't waste an aug slot on it unless you really want to be stealthy and you need to check around corners to make sure nobody will see you as you sneak around.

Stealth - Run silently. This one is worthless too. You can move silently by crouching. Why waste an aug slot on something you can already do?

Speed Enhancement - Increased running speed, higher jumps, and less falling damage. This is anothe must-have. You can run away from enemies before they kill you, jump to places you couldn't otherwise reach, and fall from heights that would normally break your legs without suffering much damage.


Ideal aug combos:

-Combat-
Combat Strength
Ballistic Shield
Synthetic Heart
Healing
Targeting
Agressive Defense System
Speed Enhancement

-Stealth-
Microfibral Muscle
Synthetic Heart
Healing
Vision Enhancement
Spy Drone
Speed Enhancement