Guides for Exotic Bounties

You can buy some Exotics with Strange Coins, and you might even be lucky enough to stumble across an Exotic bounty, with a lengthy list of challenging tasks that you must complete to earn a guaranteed Exotic at the end.
Thorn is an Exotic Hand Cannon weapon found in Destiny through the exotic weapon bounty mission line. DattoDoesDestiny goes over the steps you’ll need to take to finish the mission and how to get it done as quickly as possible.
https://www.youtube.com/watch?v=_giRtFw0cmU
As for the rest of the Exotic bounties, DRayX17 has put together this comprehensive guide (admittedly influenced by a little speculation), about how to go about completing other Exotic bounties. These may not be 100% accurate.
Shattered Memory Fragment
Description: One of our Venus patrols found a memory fragment on the remains of a destroyed Vex. This fragment concerns the final mission of Fireteam Tuyet, lost long ago on Venus’ Shattered Coast. Perhaps one of their Ghosts can be recovered.
Reward: Pocket Infinity (Fusion Rifle)
Steps:

1. Obtain a Damaged Ghost from Venus’ Shattered Coast somehow.
2. Kill a Vex Gate Lord in a heroic story mission to obtain Restored Ghost.
3. Bring the ghost to the speaker to obtain Fusion Rifle Schematics.
4. Bring the schematics to the gunsmith to obtain Depleted Exotic Weapon Core.
5. Dismantle 10 rare or higher quality Fusion Rifles to obtain Charged Exotic Weapon Core.
6. Bring the core to the gunsmith to obtain Unstable Prototype Fusion Rifle Frame.
7. Kill enemies in epic activities to obtain Stabilized Prototype.
8. Bring the prototype to the gunsmith to finally obtain Pocket Infinity.

A Dubious Task
Description: The Warlock Vanguard, Ikora Rey, left a posting here – signed, handwritten, and asking for you.
Reward: Invective (Shotgun)
Steps:

1. Talk to Ikora Rey to obtain A request from Ikora Rey Part I.
2. Complete a total of 5 strikes without dying to obtain A request from Ikora Rey – Completed .
3. Return to Ikora Rey to obtain A request from Ikora Rey Part II.
4. Earn a Kills/Death spread of 25 in the Crucible to obtain A request from Ikora Rey II – Completed.
5. Return to Ikora Rey to obtain A request from Ikora Rey Part III.
6. Complete a weekly challenge mission to obtain A Clot of Darkness.
7. Return to Ikora Rey to obtain Invective [Uncharged].
8. Purchase an Invective component from the Gunsmith for 50 special weapon ammo packs to obtain Invective [Charged].
9. Return to Ikora Rey to finally obtain Invective.

Toland’s Legacy
Description: Guardians on vital strike missions have found signs of Toland the Shattered, a once esteemed Warlock whose obsessions led to his exile. The Vanguard would like you to investigate his trail.
Reward: Bad Juju (Pulse Rifle)
Steps:

1. Complete a heroic or epic strike to obtain Toland’s Journal [Fragmented].
2. Bring the journal to Ikora Rey to obtain Toland’s Journal [Fragmented].
3. Complete additional strikes to obtain Toland’s Journal [Encrypted].
4. Bring the journal to Ikora Rey to obtain Toland’s Journal [Decrypted].
5. Bring the journal to the gunsmith to obtain Black Market Coupon.
6. Bring the coupon to Xûr to obtain Darkness-infused weapon frame.
7. Bring the weapon frame to the gunsmith to obtain Darkness-infused Pulse Rifle.
8. Defeat guardians in the crucible to obtain Sated Pulse Rifle.
9. Return the weapon to the gunsmith to finally obtain Bad Juju.

A Voice in the Wilderness
Description: A Hunter returning from Mars claims to have heard a voice coming from a sealed cache.
Reward: Super Good Advice (Machine Gun)
Steps:

1. Find a A Mournful Gun by opening loot caches on mars.
2. Buy an ammunition module from Xûr for one strange coin to obtain A Recalcitrant Gun.
3. Bring the frame to the gunsmith to obtain A pleased Machine Gun frame.
4. Kill 500 enemies with a machine guns to obtain An Enthusiastic Gun.
5. Bring the frame to the gunsmith to obtain Super Good Advice.

An Unknown Patron
Reward: Fate of All Fools (Scout Rifle)
Steps:

1. Win 5 crucible matches to obtain An Invitation.
2. Bring the invitation to the bounty tracker to obtain The First Test.
3. Perform feats of skill in the crucible to obtain The First Test – Completed.
4. Return to the bounty tracker to obtain The Second Test.
5. Trade Mote of Lights for Osiris Coins. Use the coins to compete in the Trials of Osiris. If you loose 3 times you will need to use another coin. Earn 10 wins on a single coin, or 25 wins total in the Trials of Osiris to obtain The Second Test – Completed.
6. Return to the bounty tracker to obtain The Third Test.
7. Perform kills, headshots, and killing sprees with any scout rifle in the crucible to obtain The Third Test – Completed.
8. Return to the bounty tracker to finally obtain Fate of All Fools.
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