* SugarWiki/FunnyMoments: "I'm only kidding. There's no need for [[TimeBomb any countdown]] whatsoever."
* SugarWiki/MomentOfAwesome: Cole's entire life could possibly count as one, but arguably his actions at the Battle of Psi Serpentis, which [[spoiler: Which he single handedly planned and orchestrated a situation which lured 200 Covenant ships to him, close to a gas giant which he nuked en-masse to initiate a mini-nova that obliterated everyone near it. And ONI has enough evidence to be 89.7% sure he's even escaped THAT and STILL LIVES.]]
* MoralEventHorizon: Gage in ''Dirt'' was faced with the prospect of his friends committing one by [[spoiler: abandoning a class of children and their teacher they came across to their deaths by the Covenant all for the sake of robbing a bank and going AWOL.]] Gage and Felicia avoid crossing it by doing the heroic thing. Everyone else ''does'' cross it.
* IronWoobie: Gage Yevgenny. He didn't join the [=ODSTs=] for nothing.
* NarmCharm: The entirety of ''Dirt'' is Gage Yevgenny stopping some random guy to tell him his life story as he dies. But it's still very moving.
* NightmareFuel:
** The entirety of the ''Mona Lisa''.
** Cortana's torture at the hands of the Gravemind. Also a TearJerker.
* {{Squick}}: The graphic representations of the Flood in ''Mona Lisa'' and the Brute treatment of humans in ''Stomping On The Heels Of A Fuss.''
** There is also a mention of Brute ''brothels''.
* TheWoobie: Cortana in ''Human Weakness''. It's all but confirmed that the Gravemind [[MindRape mind-raped]] her.
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