Nightmare Fuel / Army of the Dead

Spoilers Off

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• The two soldiers at the start, not knowing what is chasing them (Zeus), being forced to attempt to escape into the desert to avoid it. It's not pretty when Zeus catches up to them and kills them (particularly the one who gets his lower jaw pulled out). Then Zeus turns them into zombies and sets his sights on Las Vegas...
• The opening montage has several examples of this, not least the guy in a bathrobe who gets Devoured by the Horde in his jacuzzi by a gang of zombified topless showgirls (with geysers of blood to boot) or the poor paratrooper who is absolutely helpless as he lands in the middle of a ravenous horde.
• The lives of the refugees in a camp, where along with everything else they're put through (and fears they won't be evacuated before the nuke hits) it's implied several of those who work there are willing to accuse them of false positives of the virus - which is an immediate death sentence - if they will not go along with whatever the guard wants of them. One example of this is Cummings, who is shown to harass and outright said to use this to rape women there.
• The existence of Alpha Zombies in and of themselves. Compared to the lumbering Shamblers, these things are about as fast as a healthy and fit human, combined with savage brutality. They may be able to be bargained to a degree, but the instant they want you dead, they can and will make it a reality. And while they go down from a Boom, Headshot! just like their weaker brethren, they're still incredibly dangerous, especially when they close the distance.
• Valentine the zombie tiger, a sentry that prowls around Las Vegas for the alphas. Even Lily who is the most savvy of the group with all of this, views the only approach to that as hiding.
  • How it kills Martin. Sadistically toying with him before finally finishing him off, by biting his face off. He was an Asshole Victim, to be sure, but still, holy shit, that was brutal. Especially the aftermath... eugh.
• The fate of Chambers, led off a safe course in a betrayal. Leading to tension as she tries not to make any sound that could stir the horde of zombies surrounding her in very dim lighting - and then she is betrayed again and locked in a room filled with them as they awaken.
• Zeus ripping out the fetus of his dead Queen. It's both this trope and Squick, considering the fetus looks blue to start with and is very dead and covered in the guts and gore of its mother.
• Maria Cruz meeting her gruesome end by way of a nasty 180 degrees Neck Snap courtesy of an Alpha. It's a very brutal and Surprisingly Sudden Death, since she was in the middle of gearing up to leave, only for that Alpha to suddenly appear and then twist her head around so far it makes her spine jut out of her flesh.
• Kate hiding in a car as many Alpha zombies rush out of their base, seeking revenge for the death of their Queen, in the hope that not even one will spot her there.
• When the deadline for the nuke is bumped up, leaving the group with a very limited time and the looming dread of a nuke quite literally about to drop on their head.
• As of the end of the movie, everything might be about to start all over again in Mexico City, which is way more populous than Vegas.

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