Well I really enjoy the quests in this game.
I think that's the strongest part of the game, as they actually have huge variation in what you have to do to complete them.
And most important a lot of the quests actually make you think instead of just follow green arrow kill and you'r done.
Examples would be and you have to think that at least half of the quest makes you use your brain a bit.
A radio message in morse code, no green arrow to point you to where the message tells you to go but really have to figure it out (ofcourse for stuff you really can't figure out there's google, but hey if you just want to enjoy the game, you ll try to figure things out)
Tower defense quest against hordes of zombies.
Figuring out passwords to a PC/locker/electric lock etc. with the clues given to you or that are in the area. The clues often need real life experience to figure out on your own.
Tons of puzzles, like reading a poem and figuring out which buttons to press from the poem.
And tons more, really well done quests, although absolutely not for those that just want to grind.
The game has no levels, so you figure out which weapons/playstyle you like (and you can unlock everything) and unlock those.
The way this works is really good too, it makes you think of best weapon combo, but as your active skill bar slots are limited to 7 and passives to 10 you have to think carefully and combine the set up to create your own build.
There's 550 or so skills to choose from, so a lot of variations and combinations can be made.
PvP isn't really all that interesting although it can be decent if all 3 sides have plenty of peeps in, but this game isn't for PvP and I'm too low on skills to actually matter there yet.
Without a guild/party this game plays like a solo adventure game.
But it's very interesting due to the quests.
Oh pretty much 95% of the quests are repeatable with a 1 day cooldown to them
Which allows you to get some easy ability/skill points to get the skills/weaps you want.
There are dungeons, but so far I've only done the 1st one.
And it's rather hard to find people that went tank/healer that early on.
(this would be np with guild non pugs)
The combat system is very basic, you can put it just between the classic WoW and GW2 systems.
As it is a little more active than WoW system but less free than the GW2 one.
Let me know if I missed anything or ya want to know anything else.
The game is like half price on Steam (or was earlier)