En general es un buen juego.

A fun vertical "flight" shooter game with a good variety of units and upgrades.

Difficultyu is a plus in this game. I enjoyed it.

Quite fun and enjoyable, really liked the flamethrowers but too short overall, could have used multiple levels and bosses :3

This is fun little game to pass the time with and it does a damn good job at just that. There is some things I'm not a fan of but this is probably just being picky.
The Pros
It's a fun game with a big feeling of satisfaction. How? Just by simply blowing up enemy.
A pretty big variety in weapons and I also like the perk slot,
Fairly easy to get soldiers in the beginning.
I love the option to switch from mouse to keyboard. Games like these should have that option.
Cons
A lot of grinding involved so be prepared to lose
Very easy to lose your squad members
And lastly the sound track is little tame in my opinion.
But hey there you go That's this game and i suggest to have a go at it.