This game is NOT for 7-year-olds. It is tense, atmospheric and above all, terrifying.
The game is set in a fairly industrial environment, full of manufactured mutants and insane zombified guards, all out to get you. (There's a reason they call it Die More Edition) Each map is full of secrets and rather nicely-realised graphics - though some of the assets could do with a little more detail, such as some of the pipes and the flooring.
Ammo and weapons are very scarce, so you need to make every shot count - otherwise you're left with a knife and your own patience. There are a variety of guns as well as a bevy of things to stick together to create something better - for example, if you find 12 tin cans, you can make 2 plates which can then be made into an armour vest. It's important to look around for bits of stuff to make useful things out of - but, again, beware the nasty mutants. Many of them knock off as much as 10hp per hit, and bearing in mind the game has perma-death, this is rarely a good thing.
And the titular teleglitches dotted around the maps make the most horrific noise - sounds like the very fabric of reality is being tortured, which it essentially is. Each time you play, the map is completely different because of said glitches.
Essentially, if you're after a solid top-down shooter game that can make you cry out in horror, with elements of roguelikes, this is the game for you!