Always Save the Girl - Sometimes nay, but usually yay. More like always save everyone you like. Generally, BDF pushes for the merciful or less extreme option in any given choice-scenario.
Demonstrated in Fable 3 when he is forced to choose between ordering the hero's love interest to be executed or the leaders of the protest group that upset his brother, the king. While this was, technically, the evil choice, he didn't seem particularly happy about it. He even goes so far as to say "There's only one decision I can make."
BDF: My name is Burning Dog Face, and I bring the light with me. Iíve faced down the literal definition of evil. I've faced down the horrors of heaven and hell... I've fought zombies who wanted to turn me inside out. I am the light bringer and I stand against the darkness.
For the Alan Wake episodes, he appends "Stay in the light."
For Dead Space 3: "I'm BurningDogFace, this is my imaginary friend John." For Awakened: "I'm BurningDogFace, this is RoninDrake."
Genre Savvy - Pretty much a requirement for your average let's player, in particular there's the scene after narrowly avoiding being sucked out on a hull breach in Dead Space 2. It was red and flashy, ergo he knew he had to shoot it to not die.
Heroic BSOD - The Cheshire Cat's death was quite the surprise.
It's Personal - He's particularly angered by the child abuse committed by the villain in Alice: Madness Returns. This, plus his empathy with the character in general, makes his defeating the Doctor and saving Alice very satisfying.
Sadistic Choice - Both played straight and subverted in Alpha Protocol. He had to cut out a large portion of one video since he couldn't decide whether to save Madison or the museum, and eventually went for the museum. However when Mina is captured later in the game he doesn't even pause for a second.
Sitcom Arch-Nemesis: the framerate likes to chug at the worst times for him. It's forced him to cut several videos short and even preemptively cancelled his intended LP of Oddworld: Stranger's Wrath. He also has a grudge with cargo pallets.
All of Burning Dog Faces videos have a bit of this. He dislikes a Downer Ending and appreciates a happy one. "You can't get to a happy ending unless you try for a happy ending" is one of his reasons for playing Dead Space 2. In particular there's also this scene in his Let's Play of American McGee's Alice where he sounded genuinely hacked off at one character's death at the hands of the Red Queen (see here).
Felt a little bad about killing Nolan Stross in Dead Space 2 as well. As he mentioned, that's the first time killing an actual person and it feels a little different to stomping necromorph corpses.
Depressingly true for him with the death of Walter at the end of Fable 3.