Survivor Mode

Survivor (also known as Survival Mode) is a new gametype introduced in the 2.6 update for Injustice. The mode allows players to create a team of three members (with three reserves) to fight more difficult enemies as they progress with different mechanics, and for rewards that culminate in a jackpot, and tickets for the Last Laugh minigame. Notable rewards include Augmentation Cards, and gear sets, the first of its kind to give a set bonus when 2 or 3 pieces are equipped.

Introduction
Survivor allows players to make a team of three members to start the battle. Before every match, they are given a wheel to spin which grants them a specific reward dependent on their victory in battle. Rewards can be shards, gear cards, power credits and multiplier, augmentation cards, and Last Laugh tickets. If a player wins a battle, they advance to the next round, and enemies get tougher, and mechanics are introduced such as disabled Special I, or Heal Suppression. Enemies get tougher in terms of stats and may have gear. After every battle, players have the option to take their jackpot and end Survivor mode, or keep battling onward. If a character dies after a battle, the player can have up to (3) character changes, swapping eliminated team members out for new ones. If all three characters are eliminated with no reserves, the player will be forced to forfeit their jackpot, earning nothing from the mode except rewards from the Last Laugh tickets.

Mechanics
Unlike any other matches, Survivor matches do not consume or require Energy. Your characters' health bars are displayed in its place. Your team is also not saved between plays, and you'll have to create a team every time you start survivor.

You can heal characters for a certain amount (~25% maximum health) for 2500 Power Credits once per character per match in the start match screen.

Although you fight AI-generated teams instead of player-created (but still AI controlled) teams, Survivor uses multiplayer's rules for power generation - you gain very little power by getting hit. Additionally, your opponents can have various gears, such as The Ibistick, but you will not be able to see the stats and build of your opponent's team at any point.

Other than that however, Survivor largely follows single player's rules. It can be played without an internet connection, Super Moves are not able to be resisted, ensuring that they do maximum damage every time. Characters can edited (specials upgraded or gear changed) during a Survivor battle. The matches, especially match 6+, may have multiple crippling Modifiers (also known as challenges or handicaps) that makes progression even more difficult.

You can exit Survivor and close the app safely; you will keep your progress. If you quit during a match, your current team will be knocked out, although you can still opt to use reserves. However, you can force-quit by restarting your phone, which will still allow you to retry that match with a chance of new opponents.

If your team is KO'd, you will start where the battle left off (provided you have reserves), with the same enemy team health left.

Finishing Survivor mode puts it on a 24-hour cooldown, but there are 4 daily buy-ins, which allow players to play up to 5 times in a row for an increasing price of Power Credits (starting at 15,000).

Opponent scaling
While it is possible for the enemy team to be an assortment of bronze, silver and gold characters, characters on the same team would have roughly the same level of stats, up to far beyond what players can achieve. By match 12, characters can hit over 150,000 with s1, have over 500,000 health, and Deathstroke/Arkham Origins is known to hit almost 300,000 with his unblockable s1. By match 15, it is possible to face opponents with over 1,000,000 health who can hit over 20000 with every basic attack.

A very important detail to note is Survivor opponents scale according to your strongest character on your team. A maxed gold character will face opponents just as strong whether their teammates are also maxed or at base stats. Therefore, you are strongly advised to build your team around Raven/Prime - if she is not promoted, use a non-promoted team, etc.

Characters
There are a number of characters who are especially strong in Survivor.


 * Raven: Undoubtedly the strongest possible pick for Survivor. Her passive gives her immense free ~80% max health "damage" and "healing" potential - twice. Not only the health swap means she can take down Survivor opponents with huge stretches of health, she could also restore her own health without it being reduced by Healing Suppression or Killer Frost/Regime's passive. In higher matches, enemy health rapidly increases to the point it will take millions of damage to win - making Raven all but mandatory.
 * Containment Doomsday: Despite his low apparent health, his three resurrections allows him to soak up Survivor opponents' ridiculous damage, particularly 1-hit specials (Ares, Doomsday, Zod, most versions of Superman, etc.) that often is difficult for Raven to deal with. Since his resurrection count resets with every match, he essentially irreducibly heals for up to 60% of his large total health between matches.
 * Killer Frost/Prime: Her incredible power dampening passive (as well as further slows through her s1) are very useful in preventing opponents in higher matches from generating even one bar of power, as even their special 1s can inflict immense damage.
 * The Flash/Metahuman: While technically not possessing mechanics that are particularly of use in Survivor, his passive allows him to launch barrages of unblockable crit basic attacks for horrendous amounts of damage, and is one of the few sources of damage (other than % health damage) that would truly do more than scratch match 12+ opponents.
 * Reverse Flash: Three times a match, he recovers from damage and status effects from specials, unaffected by heal suppression.
 * Doomsday: More readily available than Raven and also decent because of the +50% total health he gets from a knock out blow, even though it is not nearly as strong as Raven's passive. Note that his effectiveness diminishes towards later matches due to healing suppression.
 * Harley Quinn/Blackest Night Martian Manhunter: For their team healing effects.
 * Batgirl/Cassandra Cain: Her passive allows her to take out 25% of the enemies health which can be a significant amount of damage especially as one reaches higher matches.

Gears
Notable gears include:


 * The Ibistick: When fully upgraded, it allows your specials to do additional burn damage over time equal to 10% of enemy maximum health, which is critical in higher matches.
 * Ra's Al Ghul's Scimitar: For the constant power drain you will find useful at any stage, and need to prevent match 8+ opponents from knocking your characters out with a single s1.

Match 7
The heal suppression is only -20% and it doesn't have radiation/regeneration, making it a good chance to heal up, although the disabled second special can make it harder (Harley Quinn can't heal team with s2, and Raven/Killer Frost can't life drain from s2 either). For Raven, a good alternate option is the Fourth World Set, giving her health regen on s1, or Gauntlets of Azrael to life drain through basics. Doomsday's Mutated Bone Spikes and Bane's Venom Injection System is very good to use here. If you are using Harley, switch out her Dual .357 Revolvers for any heal on s1 gear.


 * Static, Superman/Godfall, Nightwing/New 52: Quite frustrating as Static is immune to power drain, while Ra's is usually so useful for keeping opponents from using specials by itself. His s1 is also a fast 100% stun special that does full damage, while New 52 Nightwing can do quite a bit of basic damage upon tagging in and has an effective s1 power drain.
 * Scorpion/Mortal Kombat X, Aquaman/Regime, Catwoman/Batman Returns: Generally the easiest. Their main threat comes from the heavy damage over time from all three characters; try not to switch your characters around unnecessarily as you will need to tag out immediately after being hit by a bleed special.
 * The Flash/Metahuman, Doomsday/Containment, Raven/Prime: The hardest of the three. Containment Doomsday's resurrections means he takes a long time to take down and often lands unavoidable s1s, and Raven's extraordinarily powerful health swap is always a pain to avoid. Metahuman Flash will also quickly wipe the floor with your team after using a special, due to his passive allowing him to rapidly fire an unblockable barrage of crit basic attacks. You can avoid this team by restarting the game.

Match 9
Where it gets really difficult due to the extremely powerful opponents and strong healing suppression.


 * Wonder Woman/Red Son, Deathstroke/Red Son, Batman/Red Son: Easily the hardest of the three. Wonder Woman allows them to gain power rapidly, Deathstroke makes their basics much faster, but the worst is Batman's passive: high unblockable chance on s1, essentially allowing WW and Deathstroke's s1 (which they reach very quickly due to WW's passive) to unavoidably one-shot most characters under 1000 base health unless significant alliance health boosts/gear were used. Batman's s1 deals reduced damage but due to its high stun chance another character will tag in and finish you off anyway. While enemy stats are "scaled" to your team, low level teams are at even more of a disadvantage: their s1 can do twice of your max health in unblockable damage.
 * Solomon Grundy/Boss, Green Lantern/Red Son, Superman/Red Son: The most tedious enemy team. Red Son Green Lantern and Superman has high base health and GL's passive makes them extraordinarily tough to take down. Boss Solomon Grundy also has high health and his basic damage skyrockets as his health depletes; unusually, he also has basic crit gear, further amplifying his immense damage at low health (note that if Raven's passive triggers against him, his basic damage modifier will stay at where it is, increasing by one level until it reaches the level he is supposed to be each time he takes a further hit; uses this to try and burst him down right after the health swap to prevent him from taking advantage of his absurd basic damage at low health).
 * Bane/Arkham Origins, The Joker/Arkham Origins, Harley Quinn/Arkham: Generally the easiest of the three, but that's not saying much. Arkham Harley's strength comes from her Arkham team-wide unblockable s2, but this is of relatively little concern here as at this level, if you let them get to two bars of power, you're dead either way, unblockable or not. Bane's passive is particularly dangerous, as he gives his whole team one bar of power upon falling under 50% health. Note that his passive shares a similar mechanic as Boss Grundy above; it won't be triggered directly by the health swap, but rather by the next hit after the health swap. If you can knock him out with one hit, his passive will not be triggered, which will be critical to survival. Joker's passive can do copious amounts of poison damage (which would also lower your damage dealt by 20%) even if you have block gear to tank the special itself, so tag out whenever he does s1.

Trivia

 * Survivor has been updated multiple times after release, as at that time it was considered too difficult (for example, Killing Joke Joker from as early as match 6 is known to deal 20000+ damage on s1 against non-promoted teams with ~10000 health). The scaling is taken down significantly, heal suppression has been lessened in earlier rounds and random tag has been removed from all rounds.