I did many playthroughs without deaths in a16 but I doubt I ever got to max gs. Even if I would have nothing would have changed though. Sledge. AK, maxed armor, military, beer/grain alc meansFor the record A16 endgame was gamestage 6000. I never got that far but I guesstimate that would have been about day 250. I took one A16 run to GS 4000, day 200 and the blood moon was amazing....I lost a fully upgraded Steel base in a epic fight that lasted till well into the next day (and I had level 600 of almost everything). A16 had a balance issue in that GS did not rise fast enough, so most people quit a run loooong before endgame, assuming they had "won".
Unlimited stamina
No stuns
No need for a base
unlimited medkits (insta-heal)
There was no way to die regardless, which is why I never made it that far before moving on and why I say it lacked threat. I never had a base destroyed though because I fought them out in the open on ground level.