"Hunters and Killers", the eighty-page story that opens this volume, was interesting for me in being the first Terminator story I've seen or read which didn't feature any time-travelling. It made for a refreshing change, as was seeing what was going on during the war with Skynet somewhere other than the US.
"Endgame" takes us back to some of the characters who survived the stories in the first omnibus, as the Terminators try to prevent John Connor's birth. It's a good story, but it's easy to see why the comic came to a close at this point (licensing issues aside): there's a limit to how many Terminators you can send back after Sarah Connor before their failure becomes ludicrous.
Dark Horse then lost the license for a few years, before returning with "Death Valley" (originally a mini-series just called The Terminator). It's an okay story that wouldn't be out of place in the current tv series. Guy Davis's artwork in the first half is good, but Steve Pugh's artwork in the second half is a huge departure, and is very hit and miss. John Connor looks rather "slow of thinking" in many panels; far from the sharp-eyed, quick-witted scamp you'd expect. ("Suicide Run", a short story which appeared in Dark Horse Presents at about the same time, is also included.)
But if John Connor looks weird in that story, wait till you get a look at "The Dark Years". At the beginning of that story (split between the turn of the century and the Skynet war of the future), the adult John Connor looks like a stern yoga instructor, but by the end has transformed into a post-potion Obelix. Amazingly, there's no change of penciller, so the inkers must have really gone for it on this one. The last panel has to be seen to be believed.