Ambiguously Bi: Rinaldo hits on Emma in their first encounter, but then seems interested in Silas, the male Stoneroot guard.
An Arm and a Leg: Jayne makes a point of tearing the arms off of enemies she defeats in dire wolf form. She even keeps three.
Bad Liar: Rinaldo has a sky-high Charisma score, yet always seems to fail every check related to lying. This culminates in a lie so bad that the episode was entitled "Lie Hard."
Big Bad Ensemble: Both Phiro and Lonnegan, Phiro is trying to pull of a hostile takeover of Stoneroot and kills many people in order to pull it off, Lonnegan is trying to harness the power of Gorfinax which is the main threat that the players are concerned with.
Big Bad Wannabe: Tamsin, the leader of the Stonerotten gang, initially seems to be part of the Big Bad Ensemble along with Phiro and Lonnegan, but her plans ultimatly are less serious than either of theirs and she dies two thirds of the way through the campaign with little fanfare.
Black Speech: Austin explicitly refers to the Abyssal language as "the Black Speech" when it is revealed that Anne understands it.
Combat Pragmatist: Anne can hold her own in a fight, but once she runs out of spells, she sees no shame in running for the hills.
Con Man: Rinaldo is a charlatan. This gives him a disguise and false identity, not that it helps much.
Critical Failure: Anne only exists because of a mathematically improbable triple (!) botch during character creation, which left her with a 3 in Intelligence. As a result, she is literally dumber than a severed zombie hand, in game-terms.
Deal with the Devil: Played with. It's obvious early on that Lord Erlin is both immortal and involved with literal devils. Just how deep it goes, and what his motivations are, are some of the driving questions of the campaign.
Subverted in regards to Gorfinax. Erlin didn't make a deal with it—he's spent the last few centuries trying to ''kill'' it.
Dual Wielding: Rinaldo dual wields morningstars. While this would normally be illegal in 5th Edition D&D without the Dual Wielding Feat, Leon uses the stats of a weaker weapon to allow for it.
Evil Weapon: The "strange dagger" Anne finds in the underground lair is actually cursed with vampirism so powerful as to be immune to the Dispel Magic spell.
Exploring the Evil Lair: The party spends a whole episode searching the underground compound of a villainous faction. Said villain later taunts them for missing important clues while they had the chance.
Extremely Dusty Home: Stoneroot is this trope scaled up to an entire city. Anne covers herself in dust just to fit in.
False Friend: Jayne hates Rinaldo so much that she tries to sell him into slavery.
Austin: I like to think we're creating a dynamic, that we suck so much of the time, when we're actually good it surprises everybody into doing what we want. They never see it coming!
Obviously Evil: The headmaster of the Pickman Academy is so shady that the players wonder aloud if he will turn out to be the final boss somewhere down the road.
Omniglot: Anne speaks Common, Halfling, Orc, Goblin, and Abyssal. Unfortunately, she isn't quite smart enough to translate accurately....
One-Gender School: The party finds out the hard way that the Pickman Academy doesn't admit girls when it ruins their plan to infiltrate it.
Only Sane Man: Jayne is this to the party, who would be dead many times over without her.
On the Next: Played With. At the end of each episode random statements are jokingly recorded to sound like this.
Our Zombies Are Different: Undead miners jump the party, but Johnny is insistent that they are not zombies. They were, in fact, ghouls.
Outside-Context Problem: For the first two thirds of the campaign, the main threat seems to be Lonnegan and Lord Earlan's attempts to summon Gorfinax, however eventually a new antagonist appears in the form of Phiro, a soldier from Acamoros who wants to conquer Stoneroot.
Paper-Thin Disguise: Rinaldo concocts an entire alter ego, only for it to immediately fall apart under the slightest bit of scrutiny.