Since everyone is sharing their LGD run, I'll do it too.

Requirement:

• 2 Larsa (or 2 Pod if you have them. I don't have 2, so yeah)
• anyone leveled up to 5* (so you have 4 ability slot)
• 4x EVO MAG 10%
• Bahamut esper
• some elemental weapons, except fire. (I use wing edges from previous event)
• Germinas Boots / Producer Jacket / Escape materia
• Good Basch friend. Just enough to survive speartongue.
• Toxic Rain. To deal with Alraune.

Optional:

• DW. Just to make it faster.
• status inflicting weapons to deal with Alraune.
• items such as ether, turbo ether, phoenix down.

Strategy:

Wave 1:

• Toxic Rain
• Basch Dawn Guard
  
• auto attack
  
• repeat until esper gauge is filled
  
• escape

Wave 2-4: escape

Wave 5:

• Basch SPR break
• Bahamut
• chain Larsa normal attack (or Pod chain)

Proof: imgur album

Note: World Destroyer break is enough, but use Basch SPR break so you don't get screwed by variance.

Can't cap bahamut properly? training dummy is there for you.