Rank up your champs you cant do it with that roster it would be hard for you and you might need to use potion and revives with that roster of r1 and r2
there is the degen chapter for which unless you have gulk r1 4* are just not gonna cut itplus you would need a cap iw or void for the regen magneto and a decent counter for a god ugly rhino and juggs in this chapter (blade, shehulk,and others)
It’s best to push with an upgrade to rank 3
Most likely I'm just going to upgrade my 4* champs to RANK 3 (30/30), figured out that the way it's going to fly. If I really get unpatiencent, might then just upgrade 4*s to RANK 2 (20/20). I have been a player in this game almost about two years now. Am getting better, but, not going to push my luck or waste UNITS on health potions and revival potions for ACT 4 as much. Upgrade you god tiers like Stark Spidy, Omega Red, IMIW, Venom, Iceman to R3, make sure you have a double immune champ or at least one Posion and one bleed immune. Rank some for synergies, maybe a good regeneration champ to save potions. Three stars at R4 can also be a huge help there. Rogue is a great champ for act4, as is Wolverine if you can dupe him.
Most likely I'm just going to upgrade my 4* champs to RANK 3 (30/30), figured out that the way it's going to fly. If I really get unpatiencent, might then just upgrade 4*s to RANK 2 (20/20). I have been a player in this game almost about two years now. Am getting better, but, not going to push my luck or waste UNITS on health potions and revival potions for ACT 4 as much.
Are you trying to complete Act 4 on your first day!? Because you're definitely going to be able to get rank up materials to 3/30 a few champs along the way. T4B is going to be your first stumbling block and you only start needing that at 4/40.
When you said or typed 4/40, do you mean the final quest with Maestro in it?