hello.a) just overwriting the files will work perfectly.b) when you enter the house draw your sword and jump forward. with swallow, tawny owl potion and grindstone or crinfrid oil on sword you should kill them eventually. be mobile, jump a lot, use group style, aard and igni.when playing with mod tactic is finally important. even when fighting strong enemies, use fast style to inflict effect pain, then strong to inflict bleeding. with both critical effects enemy change to hit is decreased by 100% (but initial chance could be way above 100%, so 150- 100 still means 50% chance to hit...). the general rule in the mod is to move a lot. staying in place means being vulrnable to hit. when enemy surrounds you, you should reposition so the least ammount of enemies can reach you at a time. for example, it might be a good idea to run up the stairs if there are some or run to the corner attack once or twice, use sign then jump again.its good to know that enemies with health halved are 4 times more susceptible to aard. if you havent finished the game without the mod, some general hints:- books about monsters and recipies are very important to buy. it allows to know enemy weaknesses and make proper oil and potions.- alchemy is absolutely necessary to survive. always have 10 swallow and tawny owl potions ready to use.- use fast and strong style when you can to inflict critical effects- when you cant win, do some other things, level up and come back with more experience.- there are oils and potions for every situation. be sure to know what they do and when to use them:http://witcher.wikia.com/wiki/Categoryotionshttp://witcher.wikia.com/wiki/Category:Oilscheck some movies showing how to defeat hard enemies to general idea about movement, styles etc.http://www.youtube.com/user/andy0985all movies made on highest difficulty mod