The Harvesters of Life quest consists on Killing the 3 harvesters of Life located one in each island. Head to Windhowl and talk to the Windhowl Sentry (located at Windhowl gates). Say Help and he will tell you that behind the Windhowl gates, lies Hel, Arakas' Harvester of Life. Search for her (is skin single npc) and click on her until she becomes an evil seraph NPC. Kill her and you will receive the Hel's Soulstone. Return to Windhowl Sentry and say Reward to him. You will receive 100*level experience points and 500*level gold pieces. Then head to Filandrius (located at the Great Library). He will recognize the Hel's Soulstone and he will mention that it's interesting. Say Interesting, Countless riches, Soulstones, Names and he will give you the names of the three guardians. The are called Jormungand, Hel and Fenrir. He will also mention that once you have found the three soulstones head to Centaur Village and find a portal. Now head to Zhakar's Tower. Go west and pass over the Stonehenge. Follow the mountain line and turn east at the first mountain opening. Continue east and you will find Jormungand, Raven's Dust's Harvester of Life. Jormungand looks like an evil seraph. Kill him and you will receive the Jormungand's Soulstone. Travel to Stoneheim and take the path from Stonecrest to Mordenthal's Castle. Follow the path until you reach the mountains. Then go west to the shore. Continue north and you will find Fenrir, the Stoneheim Harvester of Life. He also looks like an evil seraph. Kill him and you will receive Fenrir's Soulstone. Now, as Filandrius said, head to Centaur Village. Pass the castle and head east (the way to centaur cave). As soon as you reach a small lake head south. You will end up at the portal. The portal will take the three soulstones, mix them and you will be teleported beside the Harvester of Life (in a black walking screen). Kill him and you will get the Crystal of Providence. Return to Filandrius and say Burden. Filandrius will take the Crystal of Providence and you will be rewarded with the Bracer and the Gem of the Immortals.