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You have two player character races that are large but no large weapons. Even the troll sword is listed as medium. In the Pathfinder rule set they will have a -2 when using it. I would suggest expanding the weapon charts to include large versions, like you did with tiny.

Inappropriately Sized Weapons: A creature can't make optimum use of a weapon that isn't properly sized for it. A cumulative –2 penalty applies on attack rolls for each size category of difference between the size of its intended wielder and the size of its actual wielder. If the creature isn't proficient with the weapon, a –4 nonproficiency penalty also applies.

I am also wondering about this. Using the medium -> large weapon damage change in the PFCRB, a Troll Sword made for a troll would do 3d8 damage. Add in a high strength, power attacks or two-weapon fighting and so on, and a hit would mean any other level 1 would go from max hp to flat out dead. Not sure if the danger bit is supposed to be that way, but hey.