I completed almost all the maps, not counting the additional ones that are purchased separately, I liked the game, I played for a couple of months with friends, there were some difficult maps, but in general, if you come across experienced players, then these maps can be completed, the combat system in the game is excellent, it’s very fun to kill a crowd of orcs, the graphics are certainly not great, but you can’t call them bad either, the textures are acceptable on ultra settings, the game is very similar to Left 4 Dead.

Picture yourself designing a game where it takes double-digit hours before the game becomes remotely challenging or interesting.

Many reviews have noted how brainless Vermintide 2 is. There's veracity to such claim, because it's true on the lower difficulties. It speaks to how needlessly prolonged and detrimental the progression system is, causing people to abandon the game before nigh everything which makes the game fun to play can be experienced. Things like monsters, dangerous elite enemies, hordes the size where they can pose a real threat, ect... are locked behind a difficulty level not immediately accessible. It's understandable why a game wouldn't swarm a new player with everything all at once, but, apparent by the reception, the training wheels stay on far too long.
Which is a great shame, because the game is amazing. Playing through the (rather large pool of) maps with different characters will make for a completely different playstyle and role in the team. There's a real learning curve in mastering each class' specific abilities. The way the classes are set-up demands teamwork. On the highest difficulties, failure is always a couple mistakes away. The characters are charming and well-written, with several hours of recorded banter between them. The narrative takes the world of Warhammer sincerely. The game is littered with small attentions to detail that show the developers adore their own game. Audio integration into useful gameplay information is immaculate - among the best in any game I've played. The pacing of the levels is superb; the escape sequences being particularly memorable. The developers have created a great deal of new levels years after launch free of charge, as well as an entirely new rouge-lite game mode. One can hop on and experiment with new ways to approach the same level, even after hundreds of hours.

Vermintide II leaves a lukewarm impression, but is immensely gratifying beyond the surface.

Addicting hoard survival similar to Left 4 Dead 2, with focus on melee combat. I somehow dumped hundreds of hours into this game. I had so much fun with it that when my friends were done with it I just played with randoms, which I never usually do. It's a good game to shut your brain off to, but there are also some difficulties that will force you to really lock in, and I was never able to really get good at them. Sadly most cosmetics are paid as well as the best classes/weapons, but having gotten this game for free to keep I am okay with that. Also some of the random bosses are so much harder than others, would like if they balanced that a bit.

A really fun Left 4 Dead child.
The combat is melee focused, felt better than i expected.
It plays and feels better the more skilled you get at it.

I don't like the idea of farming XP and gear before tackling higher difficulties and challenges, because it takes a while, and to me it feels more like a job.
However, the casual experience is really nice. At least you have the option to not care about optimizing builds or your gameplay and still have fun for several hours.

I wanted to play this game for a couple of hours just to see how it was and now I'm over 80 hours on record. I really needed to relax so it's probably for the best, but I digress.
Vermintide 2 is a straight upgrade for Vermintide 1, most of the core mechanics make a return so the biggest difference is the new content. By this I mean new classes, maps, challenges, etc.
As a result for anyone who didn't like the first one the sequel is unlikely to win them over but for those who do there's pretty much no reason to play the first game over this one. As I said, it's a straight upgrade.
However, for people who don't enjoy games like Left4Dead Vermintide might just win them over thanks to the focus on melee combat. Lower difficulties might lead you to believe that spamming left click is all you need in order to win but you quickly learn that levels and talents are far less important than the moveset and properties of your current weapon. It's not too complicated when you break it down but being able to land headshots consistently and staggering certain enemies makes a world of difference. In short, the combat is largely skill based, a lot of fun and had enough depth to keep me interested even after the 10.000th Skaven slave kill.
Another aspect which I found endearing were the Ubersreik Five, also known as the playable cast. They have a lot of personality and the casual interactions between them are just overflowing with character. It really makes you give a damn about what you are doing in each mission, especially if you are anything like me and prefer playing with bots most of the time.
On that note, the game can't be played offline which is a real shame since that is possible in the console version. I would really like if it was for conservation purposes because I really like this game.
About the story, you don't really need to play the first game in order to understand what's going on. If you want to get into Warhammer Fantasy don't blame me when you are reading wiki articles at 4 AM. It's a lot of fun though and enhances the game immensely because there's a significant degree of attention to detail when it comes to made-up lore.
Finally, the game has some DLC but it's downright generous by current standards (and compared to Darkide). Most of it is cosmetic and I think the characters already look pretty good by default. Also, what classes and weapons are meta change with the time so it's not like any of it is mandatory to stay relevant. Right now as I'm writing this the strongest class is Witch Hunter Captain which you unlock after beating the tutorial.
Anyway, this game is great and I hope it doesn't die when it stops being profitable to keep the servers up.