No promises at all with this jank - I really just want to see if Quetzal and Vial can be made to work together.
Botulus past multi-sub/strong non-Barriers and ChiselCarve weak ones while you set up, then ChiselCharm combined with Egret/ID/Vial on centrals for the Twinning-Showdown + Finality/Jailbreak win. The engine is Rejig/Retrieval/Chip to get all the pieces on centrals once you have the win con ready to go. Asmund for Vial and whichever virus you need to get there.
Femme is there in case you're rich enough and she's necessary for the Showdown run. She'd be great for Retrieval if you don't have the cred, so maybe try to lose her before making it.
Keiko for the MU with all the hosting we plan on doing, which then enables the companion/Twinning play.
Hopefully, you can force the Corp into choosing between de-Icing a scoring server and allowing the two extra accesses with Showdown so you can at least score either way.
Iterations could include swapping Egret for Pelangi but you'd have to find the influence to splash 2. One of each works fine tho, MU notwithstanding. Boomerang should be another consideration. I think Sneakdoor would be a great 5-access surprise win con (install and play the turn after playing Showdown), but inf.