It took me forever to find this file today, so I'm posting it here for future reference.
mapscale.txt
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Map Scale from 1-10 on difficulty factor of enclosed maps.
1=Least difficult game maps
10=Hardest game maps
Aldarra ...7 Survival Maps
Bamoras....7
Blize ...3
Chirami ...6 (Cheer Ami)
D'Shai ...6
Deathlan...7
Defiles ...9 Survival Maps
Devous.....8 Survival Maps
Dreanin ...4
Eternity...5
Gauntlet...7 Survival Maps
Genesis ...7
Hampton....6
Hellish ...8 Survival maps
HighPass ..5
Izzone ....7 Survival maps
LackLand...6
Larven ....7
Malkire ...5 (Mall Kirry)
Minox .....3
Nessus ...6
Nightowl...2
Norcetta ..7 Survival Maps (Nor-Setta)
Omega .....7 Survival Maps
Omni-3.....4
Oxbow ...4
Pangaea ...9 Survival maps (Pan Gee a)
Paradox....6
Patrio.....5
Purgator...6
Qibwaai ...4 (Kibway)
Renchar....6
Spearel....7 Survival Maps
Stealth....8 Survival Maps
Thevenin...6
Tinot .....5 For one on one playing only. (two player maps)
Vaenus.....5
Victoral...5
Vidland ...1
Vengier ...7
Warzone....7
Wormer.....7
Xaimai ...10 HARD !!! Experts ONLY! (Zi-may)
Zaverus ...2
Zzexlia2...3 Combination of original maps of Zzexlia and
lower levels of Vidland
Count=45