Pick up the legendary Overture and put a silencer on it. Spend skill points in Cool for stealth and resistances, and you can finish the game on very hard without crafting anything and wearing whatever you like.
[ EDIT ]
Also, one can invest one perk point in Crafting just to get the first level of blue. Then in early jobs, you get the Buzzsaw light machine gun with high fire rate and pierce through object. It works with no string attached to the Tech tree.
Also, also, get the ping from the roundabout store (it's a side job early on given by T-Bug after the recue mission), now you can ping enemies and kill them through walls just like Contagion use to do.
Put crit mods on your Brain slots and eye socket in the Cyberware section. They have minimum to no skill/level requirement.
You can upgrade the Buzzsaw as you go, material don't cost too much as you get good money from jobs, you can buy them if need be. You just don't get +3 mod slots for it but the damage is enough to kill everything.
Also, also, also, get the Satori Katana on the rooftop during The Heist. No need to invest any Blade related perks if you prefer to put them elsewhere, it has 500% crit damage, you can two-slice any enemies and mechs with it.
That's it, you can look snazzy and keep your money for the car of your dreams ruining the bad guys life in Very Hard mode.