Good game? How many missions available?

[Sparkling Fairy Randy]

I kind of want to try, but also, not necessarily desperate for this game.
Does this have a fun game loop? What about reward? Do you feel accomplishment finishing the missions, or on top of 60$, are you also required to pay for cosmetics?
How many different maps are there? How long each takes to complete? Are they all the same? How about monster diversity?

[Lawn Chair Enthusiast]

Does this have a fun game loop?

Yes, very.

What about reward.

Materials for crafting in a very subpar system that relies a tab much too much on rng. It's better now than it was at launch but it's still not the best.

Do you feel accomplishment finishing the missions

Subjective, but does lean towards fun.

are you also required to pay for cosmetics?

There is a premium cosmetic shop which is quite controversial but has the most fabulous stuff. There is free one but it's mostly just reskins along with challenges. Mixed bag.

How many different maps are there?

Around 15, but there is a feeling of there being not being enough...

How long each takes to complete?

I'm assuming you're talking about maps. On High Diffculties, it can take about 20-30 minutes if your team is competent and/or at a decent pace. not sure about the lower ones.
There are in-game achievement challenges that you can get but they're not super amazing.

Are they all the same?

There is a feeling of the maps having a very samey if not monotonous aesthetic through all of them which people definitely do notice.
The gameplay through most is kinda samey with the only thing different is with layouts or how you interact in events- but I don't really mind since the enemies that inhibit them are the meat of the gameplay.

How about monster diversity?

In terms of all the enemy design, almost all of them are very well done and fun to fight against. There's a huge amount of enemy variety that can force you how to change how you approach scenarios.
There's gunners that pin you down and inhibit progress, Melee elites that can do massive amounts of damage if you're not looking and specials and hordes that get sprinkled during the heat of gameplay to keep you from being complacent.
No game is exactly the same and you can find yourself being cornered if you don't make the proper plays or know how to counter the moveset of the enemies, meaning that you can technically solo the game if you're good enough- skill expression is high.