no, you have to wait for ch 3 (doors)
spoiler
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as soon as you choose which guild you want to be with you will be able to open the doors, well soon after that, nometter which way you chose
it dosn't metter much how u decide - it leads to the same end, just different items and a few different quests
if you still have trouble with that lich guy read my post called "Lich" in this forum or email me i will teach you how to become a lich slayer:
admiral.ondra@post.cz