This was the third novel on the series and last to be publish. Don't know if the writer will continue but I would hope so - unfortunately I didn't enjoy that much - this one.
Basically the other two novels, we were on different space worlds BUT the worlds could be connected.
Here, we are on our earth (or at least version) and something attack humanity from another dimension. At first it was a survival story which was interesting then it turn into a full battle stuff.
My main grip was with the story and characters - first of all, there is too much convenience, deus-ex machina situations and such. Then we've got the MC which is all powerful, there seems to be no risk, even when there is. As previous novels, the MC is a kid/child that is far smarter than grown military man. Makes no sense...
Oh well, I want to continue to read more tales on this world.