well salve is an amulet from haunted mine quest it gives a 15% bonus to att and str and when enchanted it gives a 20% bonus when fighting the undead
due to armoured zombies being undead and their proximity to an alter they are a respected source of experience, the area they are in is revealed through the defender of varrok quest
ankous are in the fourth lvl of stonghold of security and are lvl 75 ( the ones where every1 goes are any way) they drop a reasonable amount of runes and other bits and peices which can net you a lot per trip
fire giants are in baxtorian falls dungeon and are discovered in the waterfall quest