After playing for a bit I'd recommend Dead Frontier 1 over 2, just feels like there's more quality and thought behind the development, of course that's just my opinion and if you enjoy 3rd person shooters more than isometric shooters you might enjoy this.
This kinda felt a bit more basic in comparison. I mean it wasn't a bad experience, just feels like a decent foundation and that there could be more rpg mechanics in line with DF1 added to it to make it feel more "complete".
For what it's worth it's currently got a player count of around 1,000 people per day so it's definitely got good player retention compared to some AAA games that came out this year and it's a F2P MMO that released in 2019 developed by basically 1 guy lmao.

This is not a new player friendly game from what i can see the only people playing it are the people who have been playing for years at around level 15 the game starts to truly slow down in exp gains and becomes super boring running around killing the same monsters over and over there is only a two handfuls of dailies. Game lacks content. Very grindy game with little rewards and slow xp gains.

Entirely free. I still feel like I deserve a refund.