The Spiderwick Chronicles Cheats for the PC

Hints

Achievements
If You complete the indicated task You'll get the allotted gamerscore.
Ball Bearings Enthusiast (10) - Collect 25 Ball Bearings.
Beetle Mimic Collector (10) - Record all Beetle Mimic Sprites.
Ball Bearings Collector (10) - Collect 50 Ball Bearings.
Bellflower Collector (10) - Record all Bellflower Sprites.
Faerie Fruit Enthusiast (10) - Collect 10 Faerie Fruit.
Fire Salamander Master (10) - Complete the Fire Salamander page in the Field Guide.
Flower-Head Collector (10) - Record all Flower-Head Sprites.
Flower-Winged Sprite Collector (10) - Collect all Flower-Winged Sprites.
Goblin Killer (10) - Collect 100 Goblin Teeth.
Chapter Five Complete (10) - Tame the Griffin.
Chapter Four Complete (10) - Find Aunt Lucinda.
Chapter One Complete (10) - Find the Field Guide.
Chapter Seven Complete (10) - Defeat Mulgarath!
Chapter Six Complete (10) - Return to the Mansion.
Chapter Three Complete (10) - Burn the Field Guide.
Chapter Two Complete (10) - Obtain the Monocle.

Getting the Antuique Saber
If you already have Thimbletack's Jack, go to the bars with alternating electric currents. Go to the third bar, and quickly run to its left. Look behind, and you will see another platform. Keep following it until you find a hook where you can aim your jack. Swing to the other side, and an intermission sequence will show the Antique Saber has been unscrewed. You will also find the last two cockroaches here.