In Act 2 in the place where the paladins have gone mad, is it worth my time sneaking by them so as not to harm them, or can I kill them without any loss later in the game? I was thinking after I get the crystal they'd go back to being good, but then remembered the necromancer saying he'd teleport me back as soon as I got the crystal... so can I kill the paladins, or is it best to avoid fighting them ? TIA