Well my first experience was stumbling into Balotta, getting shot at, luckily picking up a baseball bat, killing the bastard and then sadistically killing every poor sod who wondered in there with my trusty bat.
Found an M1A1 with no ammo. Got a nice rucksack and some pretty cool clothes.
So far I'm enjoying it a fair bit although not having a real indicator of food levels sucks. I ate some food and 2 mins later it said I was starving again.
No hackers yet as far as I've seen.
Zombies are still glitchy as hell. Meleeing them is suicidal as they can hit you from 3 times the range you can hit them for some bizarre reason.