A solid stealth tactical game, don't play it expecting Xcom or you'll fail. It's more about being a Stalker scavenging while figuring out how best to take down an area by clearing stragglers and using good positions.

The balance felt just right that you kept being on the challenging edge of taking moderate risk to avoid open shootouts. I liked the ambiance and presentation, the story was mostly to support the world setting, not super involved.

Not my style of game

Disclaimer: I played the Mutant after the second game of The Bearded Ladies studio Miasma Chronicles.

In comparison.

Better in Mutant:
- Character design and overall design of the world. Looks more creative and looks like put more 'human-like' with a soul. Can't explain.
- Characters in general. More interesting and fun writing. Except for the buddy-robot in the Miasma all characters are dull and main character just an annoying kid. (Bormin is the best!)

Better in Miasma:
- The Miasma has better 'graphics' meaning more details in the world, bigger locations, more stuff basically
- The overall story has more plot and bigger scale
- Combat in Miasma more versatile and there is more space for experiments and different tactics (the biggest advantage as I see it)
- More skills and ways to use them
- Actually useful stealth. In Mutant it's almost impossible to kill somebody with a rank higher than simplest brute, cause stealth weapons don't have any significant damage till the very late game

Extremely annoying:
- No SPRINT! Too much exploring and no sprint. It cost you time and patience.

All in all I recommend to play both games, cause not so many good tactics on the market that have some descent story and characters!

DLC. It's just okay. One new character that is somewhat okay. Story is stupid.
If you want a little bit of more tactic battles after finishing the main game, buy it on discount.