The following are the steps required for each part of the main quest line. There is an increasing timed delay between the quests, up to 24 hours for the last ones.
Update: The quest line was extended from 26 steps to 31 steps on the 20th August, with each of the new quests rewarding 10 xp, 10 cards, and 10 gold.
Entry #1: First Patrol
Go out and put down a few walkers. All in a day's work.
Take out 15 walkers
Entry #2: Supply Run
Rule #1 of surviving the apocalypse: Never run out of the essentials. Time to stock up.
Loot 5 supply crates
Entry #3: Armed and Ready
Every day is harder than the day before. Better make sure I'm ready for tomorrow.
Upgrade 1 weapon
Entry #4: A Friend in Need
Joe's friends need help. He's always had my back
Upgrade Joe Mahtani to Power Level 30
Entry #5: Preparing the Rescue Mission
Joe and I need to make sure we're well-supplied for what lies ahead...
Loot 6 different supply crates
Entry #6: Up-Close and Personal
A sea of walkers stand between us and Joe's friends. Let's cut them down.
Win 15 battles with Anvil shotgun
Entry #7: To the Rescue
Joe Mahtani's friends are scattered all over the area. Let's find them and get them to safety.
Bring 10 survivors to Safe Houses
Entry #8: What Doesn't Kill You...
No pain, no gain. Gotta keep getting stronger if I want to stay ahead of the dead.
Perform 3 card upgrades
Entry #9: A Rare Occasion
Lots of useful stuff out there. Some of it is worth going the extra mile.
Collect 3 different Rare cards
Entry #10: Battle-Hardened
Time to show them what I'm made of. Let's raise some hell.
Win 10 battles
Entry #11: Diamonds in the Rough
Some things are exactly as they seem. Others are just waiting for somebody to come along and unlock their potential.
Perform 3 card upgrades
Entry #12: Slow it Down
They may not seem like much one at a time, but in a group all riled up and hungry? Man, watch your ass.
Take down 50 Slim walkers
Entry #13: Extermination Duty
The world belongs to them for now. But I'm taking it back one block at a time.
Clear 5 Infestations
Entry #14: Community Outreach
We can reclaim this city, make it safe for people again. It all starts with one place to call home.
Build one Safe House
Entry #15: United We Stand
One thing I've learned: No one makes it out here alone. Not for long.
Join or create a Group
Entry #16: The Bigger They Are...
They're big. They're slow. They're really hard to kill. At least they're easy to hit.
Take down 50 Heavy walkers
Entry #17: Power Overwhelming
At the end of the world, life can feel like a game. Time to level up.
Perform 3 card upgrades
Entry #18: Stretch My Wings
Feel like I gotta get out there. See the world. Bring back some stuff.
Clear 20 different supply crates
Entry #19: Preemptive Strikes
Sometimes it's best to go out and look for trouble before it decides to come looking for you.
Win 10 battles
Entry #20: Quid Pro Quo
Safe space is hard to come by these days; if I help people find some, maybe I'll get something I need in return.
Create two Safe Houses
Entry #21: The Culling
Walkers don't breed, but they sure as hell herd up. Every once in a while, you need to trim their numbers.
Take down 50 walkers
Entry #22: Excelsior!
Take care of your equipment. Push your people a little harder. You'll get results.
Perform 4 card upgrades
Entry #23: Good Samaritan
Still a lot of people out there, barely surviving. They need somebody like me to show them the way.
Bring 15 survivors to Safe Houses
Entry #24: No "I" in "Team
Everybody works together, everybody benefits.
Claim a Group board reward 30 times
Entry #25: Evolution
I'm learning how to survive in this world. I'm changing. I don't know if it's for the better or worse.
Perform 3 card upgrades
Entry #26: Tarry No Longer
They were people once. Whatever it is they are now, maybe I can still bring them peace.
Take down 50 walkers
Entry #27: Tarry No Longer
They were people once. Whatever it is they are now, maybe I can still bring them peace.
Take down 50 walkers
Entry #28: Tarry No Longer
They were people once. Whatever it is they are now, maybe I can still bring them peace.
Take down 50 walkers
Entry #29: Tarry No Longer
They were people once. Whatever it is they are now, maybe I can still bring them peace.
Take down 50 walkers
Entry #30: Tarry No Longer
They were people once. Whatever it is they are now, maybe I can still bring them peace.
Take down 50 walkers
Entry #31: Tarry No Longer
They were people once. Whatever it is they are now, maybe I can still bring them peace.
Take down 50 walkers