You need to kill them to get the keys needed to advance, get as many health potions as you can and just try your best save just before you go in, dont forget you can pause your game by pressing sapce bar so you can keep a very tight control over whats happening. Now that you know whats ahead you may want to start again and save your potions, sleeping whenever you can instead. you could also try my post labled STATS SPOILER.
