[Game Guide] Xenoblade Chronicles X (Wii U) Telethia, The Endbringer Boss Guide (How to)

This is an easy, sure fire, way to defeat the Telethia boss in Xenoblade Chronicles X. Most of the augments listed are necessary, however you do not need as many ULTRAFAUNA Slayers as I have, two will suffice. The Custom WP Atk XX may be overkill as well, however they're added just to be safe. Basically you want to deal as much damage as possible as fast as possible, hence the Custom WP Atk XX's, and the ULTRAFAUNA Slayers. Custom WP Speed XX is added to the laser attack as it makes the recharge almost instant during Overdrive. Arts GP XX is a necessary, as Overdrive will make this fight a tonne easier. And the most important part is the immunity towards Ether damage. You need at least 100% Ether protection to deal with the second part of the fight.
The Guide:
Target the wing and attack, it'll easily be destroyed at the start of the battle. Repeat Aghasura Cannon as much as possible at the start of the fight to lower his health. Once he reaches about half health he will cast a buff that protects him from all damage, during this he'll fly to the ground and commence the battle, losing the buff. During this time use and cancel your extra skills to raise your Overdrive Gauge. Once you reach the ground and the buff has been removed, cast Overdrive and start attacking, if you don't have 100% Ether Immunity at this point, you will suffer massive damage when you attack. If you get lucky with Criticles, you can finish the fight here, if not then he will cast immunity once again and fly back into the sky. Once he reaches the sky and immunity wears off, he will cast another skill that causes all of your attacks to miss. I can't confirm this, however I've read that this buff will vanish after a certain amount of misses have been triggered, so to do this I've activated overdrive and spam attacked with Agni Gatling. It does seem to wear off in due time, however this way is more fun and guaranteed. After the missing buff wears off, cast one more Aghasura Cannon to finish the fight.
The locations for all the Augment ingredients are as follows;
Arts GP XX:
White Mortifole Feather - FN221
Aeviter Star Wing - FN412
Red Vigent Rock Scalp - FN312 Daytime
Custom WP Speed:
Quality Fuse - Mesa Fortress
Spathi Glyph - Reward Tickets (Easiest option)
White Yggralith Nut - Reward Tickets (Easiest Option)
Slayer UltraFauna:
White Forfex Shells - South Coast Oblivia
Reverse Millepod Fin - FN306
Deva Caladers - Reward Tickets (Easiest Option)
Custom WP Attack:
Quality Giant Cells - Delusion South Summit Sylvalum
Visigel Poison Orb - FN505
Silver Cantor Tooth - West Ciel Sandsea Sylvalum (Night Time Only)
Spec Up Ether Res:
Opaque Mirror - FN317
Red Milsaadi Hood - FN512
Gold Ceto Membrane - FN221 Night

Key points;
00:00:00 - The Augments
00:40:00 - The Fight
06:33:00 - The Preparation