Fusion Spreadsheet Downloads (Current version: 2010313) [By me with help of Rusty Shackleford]:
Fusion spreadsheet from Megaupload (.ods)
Fusion spreadsheet from Megaupload (.xls)

From web:
Spreadsheet for levels on Google (Thanks Forger)
Rusty Shackleford's verison of Guild Growth Spreadsheet
FutureRP Game Information Version 4.0

Fusion Spreadsheet Downloads (Version 2010313):
Fusion spreadsheet from Megaupload (.ods)
Fusion spreadsheet from Megaupload (.xls)

Update: Added the system of attacks until target level for lvl 1, 2, 3, 5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 90 and 100. I'd like to thank Storm Trooper for that.