Here are two new types of Deathclaw for Fallout 3 and an expansion of the Deathclaw Sanctuary.
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File credits
Bethesda for base content.
vegaswanderer for assistance and advice while working on the mod. seangloin for MMM and FWE compatibility information.
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The mod contains two new types of Deathclaw as well as a 'nest' hidden deeper into the Sanctuary, the Endurance Bobblehead has also been moved in the expanded version of the mod to make it harder to obtain.
Cheers to vegaswanderer for helping me with advice on finishing this mod, and to seangloin for the info re MMM and FWE.
Additional Notes: This is a standalone mod, from user testing this mod shouldn't conflict with any other mods unless they affect the Deathclaw Sanctuary specifically. It will work alongside Mart's Mutant Mod and Fallout Wanderer's Edition with no conflicts as far as I know. Also scanned the mod with FO3Edit again and picked up on some of the issues mentioned in the comments section.
FIXED: The deathclaw queen is no longer 'super powerful' her HP level has been reduced to slightly higher than that of a Super Mutant Behemoth.