I have been playing it for about 10 hours now.
-Unique visual presentation that I have not seen in other games. Environments are very diverse graphically. Excellent lighting and particle effects, on par with Metro 2033.
-Good weapon handling and visceral combat.
-Diverse characters with their unique style of fighting. AI in general seems to be pretty good.
-A lot of collectibles, weapons upgrades, different ammo types for some weapons, engineering of various tools.
-Low resolution textures.
-So far I have not seen daytime changes or weather changes.
-Auto racing feels like it was hacked on, some races are frustrating because progress cannot be saved. But it could be me as I am not a driver type of person.
-Vehicle combat feels a bit clunky as weapons cannot be aimed, it uses auto-aim system, otherwise the vehicle needs to be moved/turned to aim.
-Lack of advanced graphical settings.
-Not realistic bullet ballistics.
-The game does NOT use the full potential of this engine which is probably the best out there right now, only Metro 2033 engine can compete with it.
In general it is a mission driven game play, it reminds me of Bioshock and S.T.A.L.K.E.R. series where you have to complete tasks to earn money to buy stuff to advance further. If they release good modding tools and SDK, the gaming community could develop this game further.
Alienware: Core i7 960 3.2GHz | 12GB RAM | 1.5TB HD | EVGA GTX Titan X | Dell WFP 3008 30" 2560x1600 | Windows 10 Pro 64 Bit