I have sort of a love/hate relationship with Pathfinder. I really enjoy parts of the campaign setting, and the bestiaries are fantastic, but everything is just so fiddly on a rules level, so I never would feel confident running a campaign using the system.
But, as I said before, the bestiaries really are fantastic, and here is one of the monsters from Bestiary 4, converted to the blue book's rules.
Move: 120 feet/turn
Hit Dice: 10
Armor Class: 2
Treasure Type: E + 5000 G.P.
Alignment: Lawful Evil
Attacks: 1 bite and 2 claws
Damage: 2-16 bite, 3-24 claws
Gholdakos are the undead mummies of an ancient race of one eyed giants, that are thought to be extinct in the modern world. They are covered with rags of linen, upon which runic symbols are written. Though the Gholdakos are intelligent and capable of speech, they know no language other than the guttural tongue of giants.
Gholdakos can exhale a cloud of dust once every 1-4 rounds. Anyone caught in this cloud must make a saving throw versus dragon breath or be permanently blinded.
Anyone hit by a Gholdako must make a saving throw versus death ray or lose 1-4 points of Strength. Strength lost in this way can be regained at a rate of 1 point per day. Anyone reduced to 0 Strength dies immediately and crumbles to dust.