I being playing fallout NV in the normal difficult...the last mission i did was get the nightstalkers eggs...i read in the wiki that the legendary could kill me with 3 or 4 hits and the poison bla bla...but i killed him so easily i have 100 sneak and i just give 2 shots while hidden (1 was in caution) and he was killed (ycs gauss rifle) should i put in hard or very hard??