(If he can make himself smaller or slicker, the tunnel is a possibility)

'Slicker'?

The only thing I can think of that would work to do that would be to have Fuego use Create or Destroy Water in the hopes of making Andre just a little bit more slippery.

Morty could offer help and guidance to get Andre over the plate

Marnoa asks for guidance from Morty to around the pressure plate.  

Dex check : 15 + guidance, if offered.  3 

(Oh yeah, guidance all around)

Yeah, that would be nice...

Okay, second Dex (because advantage from Help action) check + Guidance

16 + 3

Ok. Andre and Marnoa are taking the corridor. Is everyone joining them or is anyone taking the tunnel?

After offering help and guidance, Morty will probably take the tunnel. (Rolling in game log, can't get the forum to play along today)

Fuego Acrobatics 14+ guidance 3

(Morty rolled a nat 1 for athletics, guess he's going to try for the plate unless he can be hoisted up)

Jacks will use the tunnel. 

Athletics: 20 

On second thought, Jacks will use the corridor instead. (Given that he can't get up in the tunnel).

Dex: 16 

Forgot Morty was a Halfling for a second. New roll for the nat 1

13

Marnoa proceeds to the north and looks around the corner, after stepping around the plate, looking down the hall.  “C’mon, let’s go, come with me.”

(Morty is doomed either way)

Okay, what is the marching order in the corridor?

Fuego will be middle-back, like 3rd or 4th.

I guess Andre will go first.

Jacks will go second. 

Morty either middle or last