First the downside...
the story and logic is kinda wishy washy sometimes. You are the best commander, right out of the simulator, towers made to hunt, safe zones out of nowhere... well nevermind it.

Gameplay's good and depending on your style very easy to impossible nightmare.

It's a fast pased real time strategy game in a reverse Tower Defense or Offense.
There is no chilling in this game but I wouldn't say it's stressfull. You need to pause often to plan your path, squad and so on.