Account Rank 1~15 you'll probably be going through the first two episodes. Every time you clear quests and stages, you'll level up to meat reset and never ending grind to future stages. You'll be struggling to get bread for a day or two. I think by the time you should have a 3 or 4 star Leona and other 3/4 stars characters at max level. Meanwhile, you should already be doing the Colosseum to get weekly gems. No matter how low they are. For all checkpoints (last stages), you could do the most recent episode-level grind until you think you can actually attempt the harder stages. As you get through episode 4, you'll be getting 5 star characters and farming the end for six star characters. Viper carried me to Dark boss (2-3Overdrive w/ Bella KO). I think the best SBWs to work for is Warrior, mage and healers before you can start working for hunter SBW. Unless, you have your sights on some SBW which will drain your resources. When you have a consistent team, (e.g. DPS, healer, & Frontline) you could clear through the early stages of Tundra. I would try to get Roland (maybe D'art) at this point. People use Archon to get by but since tMR was nerfed, I don't know if she can stun constantly. If you land on a Sasquatch SBW, that could be very nice because the permastun will allow you to definitely clear tundra. I'm not sure what my first clear time was for T. Hard. To make some fast finishes for Tundra H, you'll want to search for Rachael and her SBW. She can duo the hard boss with Woompa (SBW) or you can just get a team to work with her. Battlefield feels 5x harder than T. Hard boss then as you go down it gets scary. At which point, if you have Rachael and her SBW, you can clear swiftly through the stages anyways. I'm not sure how long it'll take to get to that point but probably a couple of weeks to months. Battlefield wasn't released for months after Tundra, so I can't say when you can move on or not. Before Battlefield came out, people just farmed Tundra H to get resources/double gold quests and working to build their teams. Progression in the game is quite fast to end game unlike most games because of ALL the free stuff HanGame, formerly TOAST gives out.

There's no rush in CQ, but you could get stuck for gold/bread shortage, hero level, damage problems, armor problems and honor problems. Honor over time becomes useless, so you shouldn't worry about it. If your tank keeps dying quickly, you are missing armor from your paladin weapon. If you don't have gold, watch your spending, you could be using too much on training for low level breads. If you are having bread problems, you'll have to be patient for daily oven and thursday bread dungeon. If you don't have heroes, you need to be patient and keep the ones that are getting you by now. You can save up all the free jewels from quests, tome, level ups, hangame and pvc for 50 jewel pull or use those same jewels to train and work your teams. If you can't get beyond a certain point, it could be you aren't ready to take it and your heroes need more level ups. If your heroes feel too weak, you probably need to upgrade your weapons or gain new ones (5/6 star are what you are looking for), they are more obsolete now if you can just patiently get free stuff to make Soul Bound Weapons. Maybe your heroes need the right skills, the recommended "skills" are on the right side of this reddit. Once, you've made improvements, you'll probably see better results in PvE and PvC.