got it tuesday. im still in detroit (this is long and hopefully majority spoiler free, but just what i did, as it took me alot of deciding what to upgrade)
just deciding upgrades id say essentials so far for first area
jump and heavy object move. i also like a big inventory so have purchased 2 slots, and the recoil is mad. so have one of the recoil supressors.
ive got to the first armoured gaurds(non police) in detroit. where you see the aug people that you met on the first level (herorrine is pre augmentation) and saved 4 upgrades.
ive put silence ap and laser sight on the pistol. also have extened mag and quicker reload on it, and an extended mag on the combat rifle
ive just been playing around taking out the armoured guards on the warehouse in detroit (got to after doing most all of the main detroit area/mission). I think see through walls makes it alot easier to quickly take out people or know when/where to move. whether you use pistol/snipe or get up close and personal
The armour and cloak abilities arent needed yet and i like the take out two poeple at once. I find dying from falls very annoying so i like those upgrades, but at this stage they arent essential, think ill get them in a bit. i find it easiest to remove all recoil so your combat rifle is amazing for headshots. and one head shot from the silenced/armour penetrating/+1damage 10ml pistol kills the armoured gaurds. easily and silently
If you want to snipe i suggest at least getting the first level of steadying aim, minimum it does say it reduces spread when moving but it also reduces the amount a scoped weapon shakes... (though it depends if u aim for headshots all the time and try to use it at distance.)
having played around for me personally getting to full reduction in recoil, some extra inventory space (this also gives the basics punch through walls and increased jump) i dont think u need stealth running yet, and stealth walk/run/sprint isnt that needed if you can see through walls, or are cautious, because crouch is pretty silent and you can move from cover with ease. also the whole stealth viewing perks. for your movement/sound, and enemy vision cones, and enemy tagging, is alright but not essential(they appear on mini map). especially as mentioned if you get the ability to see through walls (flick it on and off as needed). also no point upgrading lungs/running as you're noisy with it till you get the sneak movement perks. but even then you wont know where the enemy is unless you stop to look around.
the main thing as mentioned by yang is the energy bar. only 1 bar auto refills even with the upgrades as far as i can tell. this is a pain. because if you want to sneak up and melee someone for maximum bonus experience and the cool cinematic then u cant use your other perks before hand (cloak/sneak/seethroughwalls) as you will arrive at your enemy with <1 bar of energy = realization that you cant melee him and just walked into him. or you need to have fueld up on energy bars etc.
the typhoon = overated. but fun. also hacking so many perks for it.. but it gives you nothing special yet (i havent/in detroit). its not like wow i hacked a terminal i get soo much experience. its like +100 exp/ and more hacking gear. or some ammo in a cupboard/store. absoloutly no point in upgrading hacking past 2 as yet, probably bite me in the ass later (i expect u upgrade it +1 per area/level) i read u retrun to detroit. so all those level 5 acess areas i will get later. all other areas can be reasched with level 2 in hacking. and just looking for the codes off the dead/ or in rooms
all in all its good. also money is almost supid never chose money over experience points. as the shotgun although good (one shot kill armoured gaurds if all pellets hit) is noisy and loud and slow. and the smg is bs. (until u get recoil supression) so i sell them to vendors. if you can be arsed you can pick them up individually and sell them you make good money. if you have them in inventory when you pick up a new gun u just take the amo. by selling **** individually when i cba, ive got like 13,000 credits, and thats after purchasing the two upgrade units from limb clinic in detroit. stun guns is rubbish/painful. the range is so poor you may as well melee the target.
but all in all seems fun and i hope i get to upgrade virtually everything by the time im towards the end game. as i dont want to miss out and considering im allready limited by energy its not like having everything unlocked would be overkill as far as i can tell from the wqay the levels work so far.