HOLY APOC! Dark Dimension 6 Node 8 START! MARVEL Strike Force 

it's a bit too late for you Boilon, but for others doing this node: if you kill the final characters from the first wave with either Kang's passive or Photon's Charged mechanic, Apoc doesn't spawn with immunity immediately. you can then use Vahl's AoE ability block on both Rulk and Apoc before Apoc gains immunity. If other characters move before Vahl can AB, make sure you don't hit apoc until you land the AB from Vahl. It's convoluted, but makes Taking out Apoc and Rulk much easier.

I am guessing when they had that big six hour downtime update. They switched to some cheaper hardware and we are now seeing the effects of that with all the crashes.

I'm at the same spot and that Apoc, Red Hulk, Morgan, Omega Red portion is brutal. Supposedly there is a way to get Apoc to spawn in without immunity if Kang kills the previous wave with his passive but I did not get that lucky.

Rayge had a trick to get around apoc immunity, but I didn’t have the patience for it. Have to kill last person on wave before he drops with kang passive.

Before you launch the game, clear the app's cache. I do this on both my Pixel 6 and in BlueStacks and the game no longer crashes.

Unfortunately MLF, Strange, and OR are gona wreck you on your next 2 attempts.