If I completely explore Master, I'll have a 5 star. I'm really impatient and want to do it as soon as possible. I did last month with ease, and I should be fine on the last quest for this one, but that Vision drove me crazy enough on the easiest path for initial completion. I even had to use a couple revives. The only coldsnap or armor break immune that I have as a 4 star is Thing, he's only at Rank 3 and while I could R4 him, I also need the resources to R5 my Venom. I don't have a nullify champ either unless you count Thing's nullify on some specials or a Rank 3 Juggernaut. I tried just using a 3 or 4 hit combo and backing off so coldsnap doesn't set, but I keep getting backdraft intercepted. I've tried backing off even more, but then he comes at me and while I can intercept, I keep getting pushed back farther and farther back against the wall and get affected by coldsnap anyways. These are my top champs:

Do I have any viable counters that I'm glancing over? If only Kabam fixed the darn backdraft intercept bug or gave Vision the #Dimenional Being tag with he rightfully needs, I could use my Blade and I wouldn't have a problem. Sadly, that's not the case and I need help. Any help would be greatly appreciated.
P.S, sorry for such a long post. Kind of ranty/needy. Thanks ahead of time!