A great first instalment what I will put down as a must read series for me. The alien-initiated apocalypse is suitable gritty. It seems to wipe out much more than the purported 90% of the population. The MC is engaging and while he leads a charmed life in combat, there is no sense he is overpowered in this new threat-filled world. Character progression is interesting and the story keeps you interested in finding out how the “system” works. There is some great action, suspense and a good range of supporting characters to keep things interesting. This is a great read and I can’t wait to see where book two takes us!