These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Ground Control
In Ground Control
Moral Event Horizon: Major Thomas destroying the medical facility whose occupants already waved a white flag at the beginning of battle.
In Ground Control II
Breather Level: Missions 21 and 22 introduce the final arc of the game.
Most Annoying Sound: Your units have a habit of announcing every single instance of damage they take. And then there's "We're losing a victory location! We've lost a victory location!"
That One Level: Several missions stand out as being harder than the others. Missions 23 and 24 are particularly murderous.