The main characteristic of this game mode is the fact that all weapon attributes are multiplied by 10. This includes both the positive and negative stats of each weapon, and often results in incredibly powerful or ridiculous weapon and player abilities.
For instance, a Spy wielding a Conniver's Kunai will spawn with only 1 health, however achieving a backstab will boost their health to a temporary 1800. This boost also applies to damage buffs or resistances; wielding a Chargin' Targe will cause the responsible Demoman to have full immunity to explosive and fire damage; a Heavy wielding the Gloves of Running Urgently cannot deal any damage with them; a Soldier wielding the Gunboats will take no damage from Rocket Jumping regardless of which Rocket Launcher is equipped. Certain weapons which would otherwise be direct upgrades from each other thanks to the stat boost, such as the Splendid Screen from the Chargin' Targe, will either not gain the boost or receive a smaller one.