Meh. Nothing in this comic is horrible, though pretty much everything is sub-par. If I had to name one thing I liked least, it would be the characters. They are either really flat and bland or pretty fking annoying.
You might enjoy this if you're a real big fan of the "portals appeared on earth, so now we have to talk about everything in videogame terminology" genre. If you're on the fence on that genre or dislike it, don't even bother trying to read this; it's not worth your time.