Boring but Practical: The baseball bat may not have been the flashiest weapon (especially compared to the Yakuza's nunchaku), but it was perfectly legal to carry, and pretty effective, too. A smart swing from one of the experts visibly snapped several of a test pig's vertebrae.
Badass Boast: Deadly enforcers on the mean streets of New York.
Your Freedom Fighters Are Our Terrorists: These episodes were never screened in Britain. Funny, that. The fact the IRA are thought of as murderous thugs who are very good at blowing up women and children... well, obviously pernicious Brit propaganda and a slur on brave idealists.
Badass Boast: Hardline religious extremists who back their beliefs with bullets.
Badass Boast: Africa's deadly new breed of high seas hijackers who make millions holdings merchant ships hostage.
Enemy Mine: The ships fishing in the waters of Somalia were a common enemy for people who once fought each other in the Somali Civil War, from fishermen who spent their lives in the water to militiamen who knew guns.
Awesome but Impractical: Played with via the chariot scythes. They look nice, and tore through two pig carcasses, but was deemed to lack true killing power and lost the edge to the Celt's burda club. However, it still got over 100 kills.
Badass Boast: The precision killer in a massive war machine who forged the largest empire the Middle East has ever seen.
Badass Boast: The bloodthirsty French emperor whose maniacal dream was to conquer the world.
Bait and Switch: His tactic that earned him the victory at the Battle of Austerlitz: fool the Prussians into thinking he and the Grande Armee were surrendering, luring them onto the hill Napoleon and his men were just on; then, obliterate the present forces when a dense fog overcame the area.
Badass Boast: The daring and deadly French duke who crushed his English enemies and crowned himself king.
Disproportionate Retribution: Edward the Confessor promised William that he would be the next Duke of Normandy. After Edward's death, when William found out that the new duke became the son of Edward's advisor, William felt that he was betrayed and started a campaign against Harold.
Eye Scream: How William used his crossbow to kill Harold.
Underdogs Never Lose: Most of the x-factors were against him and even most of his weapons and tactics were rated lower than his opponent, yet he still came out on top.
World War One: Tried to enlist in this, but was turned down by President Woddrow Wilson; partly due to his advanced age, and partly for political reasons. At least two of his sons fought in it though, with one getting killed.
Oh Crap: Cited as an actual X-Factor. As powerful as they are, they are still capable of feeling human emotions, like fear. Sure enough, the vampires freeze up, stare, and then retreat upon seeing a comrade get torn to pieces and then eaten.
One-Man Army: A fair fight was considered near 200 zombies vs. 3 vampires because one on one the vampires would win every time thanks to being able to One-Hit Kill zombies thanks to their superior strength. The vampires win.
Pyrrhic Victory: Technically won the fight, but then infection starts to set. Though the experts couldn't decide on rather becoming a Zombie Vampire was this trope or Cursed with Awesome.
probably the first. The resulting zombie-vampire would still have the vampire's weakness to sunlight but not the brains to avoid it, so would last until it tried to chase something in the dawning day. Final score: double KO.