Challenge (Strategy)

The Challenge consists of 80 rounds of progressing difficulty.
The max possible score in the challenge is 5358 points, which requires that you start with 26 round passes, and at the max difficulty level.
=== Gas Economy ===
* To save time and gas it's recommended to only play the Master Missions, which cost 10 or 12 gas, compared to 30 or 36 for playing the 6 individual missions.
* If you have limited gas, avoid playing more than 4 missons per hour, so that you always can open 6 post-mission crates. The post-mission crates will often drop gas.
* Consider buying a 30 or 60 minute gas booster from the Black Market shop with hero tokens of less needed heroes
=== Mission Types ===
There are four basic types of missions:
** 1. Gather Supplies / Search for Clues
** 2. Get To the Exit
** 3. Kill All Walkers
**
** 4. Survive {x} Rounds
**
==== Gather Supplies / Search for Clues ====
These maps will have a number of crates to search through before the exit lights up.
Glenn Rhee (a.k.a. Pizza Guy Glenn) shines on these maps thanks to his ability to move after opening a crate.
Mercer's Axe or the Tenderizer works well on him because he can use the Bonus Attack to move even further and the weapon has Interrupt. Use an armor with Primed to have a chance of activating Overwatch even if all moves are used.
Use the Walker Mike Support to be able to move and end the turn near walkers without risk.
==== Get To the Exit ====
{information needed}
==== Kill All Walkers ====
These are often the easiest type of mission as there will be no or only a limited amount of spawns.
Mercer, Yumiko, Ezekiel, and Tyreese are often good as they can deal high amounts of damage and/or slow down or push back the walkers.
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==== Survive {x} Rounds ====
Princess & Yumiko and/or Ezekiel & Tyreese can work well on these maps, as well as Bruisers with the Kingdom Shield.
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==== Human Enemies ====
* Some missions have human enemies. Humans, epecially if they have ranged weapons, can easily cause lots of damage to your survivors so you need to plan ahead.
* The main thing to consider is that human enemies will not particularly target you over walkers, so if you are not able to disable (by stunning, crippling or rooting) the humans you should position yourself so that they will prefer to attack walkers.
** Humans will normally not make more than a quick move, so stay further away than that
** Use long range weapons to outshoot ranged enemies
** Remember than human hunters and assaults will prioritze hitting the maximum amount of targets, so position yourself in a way so that they will target walkers
** Crippled humans can not overwatch, so you can use Dog to disable overwatch