I tend not to play games with killing, this game though allows the player to use stealth, which I always find fun, also there are dialogue options to resolve problems with certain characters!
I prefer games with open world, and although every part of the game isn't open at once, the maps in down time are pretty expansive and open, also, when there's an objective map like a building you've been flown to, upon reaching the end, you can still choose to travel back to the beginning!
There are gun runners in the game in each area, also there are weapons and ammo in certain locations that you can sell to the runners in order to buy stuff like Praxis kits from Limb clinics, or energy bars to enable enhancements to work longer! If selling guns though, just remember, they don't stack, having one type of weapon in your inventory, upon picking up another all you get is the bullets within that weapon, if you're willing to do the leg work, you can sell individual guns and make more money!
The game crashes every time I play, however it also saves automatically, as well as there being a choice of hard save of quick save! I personally choose a hard save for beginning a new area, and quick save just before an action, like hacking a pc, or moving from behind cover! When I first started playing, the game movement was jerky, upon turning off shadows it stopped, weird thing is, it's the detail of shadows that stopped not the in game shadows, and I can't see any difference!
I hope this was at least part helpful to you!