Cranial Augs – Use Your Head!
Social Enhancer – This augmentation adds interface elements to the game that will help you determine how you conversation choices are impacting your interactions with an NPC. In addition to this, you’ll be provided with helpful information about the NPC’s attitude that can assist in resolving a war of words in your favor. It’s handy for non-combat characters, particularly since it requires just two Praxis points to unlock and fully upgrade.
Radar – When you begin the game, you will be given access to rudimentary radar that will provide you with information about the movement of nearby characters. The radar works when you spot a character and has a range of 25 meters. For a cost of one Praxis point you can upgrade the range to 50 meter and include all characters on your radar, regardless of if you’ve previously spotted them. In my opinion, it’s a must-have upgrade.
Infolink – This is your connection with headquarters. It lets you receive and send communications without being heard. You receive, fully upgraded, for free.
Stealth Enhancer – A deep augmentation tree, you’ll need two Praxis points to unlock it and one point for each additional enhancement. The basic Stealth Enhancer you receive when you unlock the aug reduces noise generated while you move. Additional investment will allow you to see the line-of-sight of opponents and/or mark opponents for easy tracking. While this is useful for stealth builds, I would not call it absolutely essential, since other augmentations can render you entirely silent and invisible. It is actually of more use for a balanced build that relies on some measure of stealth but won't be investing into those more expensive augs.
Hacking: Capture - Another deep tree, this aug improves your ability to hack terminals. In essence, it acts somewhat like skill points. Several enhancements make it possible to have more stuff (robots and turrets) and the rest allow players to hack more complex terminals. If you’d like to make use of hacking in the game, these are must-have upgrades. You receive the very first level of this augmentation for free.
Hacking: Analyze – A small tree, choosing this will provide you with some additional information about how long hacking a node will take and, at its highest level, the contents of data stores. This won’t be of much use to people who aren’t already investing into Hacking: Capture.
Hacking: Fortify – Another small tree, this increases the fortify rating when performing the fortify action in the hacking mini-game. Again, this is not a necessity, but it will make those high-level hacks easier. I would choose this before Hacking: Analyze.
Hacking: Stealth – This decreases your chance of detection whenever you hack a node. It can be of use for almost anyone interested in gaining a little extra hacking skill, and in my opinion should be your first stop after you’ve dived into Hacking: Capture.