NOTE: This is unfinished, as we still don't know everything. With the Krypt being mostly random, it's hard to find what's not and what is really guaranteed.
Sorry if you already knew this stuff, but I wanted to make a post to try to help everyone understand The Krypt better. You can help me by posting what you've gotten in the higher quality chests below, so I can update this with clearer information.
EDIT: Full Krypt breakdown with maps and more on IGN: https://www.ign.com/wikis/mortal-kombat-11/Krypt_Walkthrough_and_Guide#Developer_Clarification
^This was posted in it's own thread by @LawAbidingCitizen
About Chests:
- Normal Chests: Mostly random, both in price and contents. Can contain anything from Variation Icons to Skins, and can cost anywhere from 1000 - 250,000 Koins (apparently that's been the reported cap). However, not all Normal Chests are random as some contain fixed contents. Some of these fixed contents are just Key Items for the Krypt to help you progress, but others seem to be actual unlockables like Concept Art and such. Skins aren't out of the question yet. Example: I was told that a chest in the corner of the room you begin at in the Krypt (the one where you meet Shang Tsung) would contain 3 Jade Concept Art, and sure enough it did.
- Soul Chests: Costs 100 Souls. Seems to guarantee higher quality items; not necessarily Gear and Skins, but things like rare Key Items and such. Some of these can also have Kollector Trade Items.
- Hellfire Chests: Costs 100 Hearts. Contents in these chests are fixed.
- Shao Kahn Chests: Costs 250 Hearts. Contents in these chests are fixed.
- UPDATE: Find out more about the contents of Hellfire and Shao Kahn chests (aka "Heart Chests") here:
- Kronika Vaults (Chests): Appear at specific locations only at certain times. Costs 5,000 Koins. Seems to guarantee Gear with a high chance of a Skin.
- Blindfold Chests: These are chests that can only be seen when you have the Blindfold on. The locations ARE NOT random, but the contents are. You use Koins to buy these, and the amount they cost can vary. Most that I've opened have contained a Kollector Trade Item.
- Special Chests: Some Chests are unique in The Krypt. Example: there is a Submerged Chest in the pond in The Dead Woods that cost 250,000 Koins and 3,000 Souls. The contents are set and it gives you a bunch of skins. There may be more special Chests like this.
Additionally, there are more ways to unlock things in the Krypt:
- Nakadan Shrine: You can donate Koins here to gain random items. The amount you donate may have an impact on the rarity of item you get. There are also certain konsumables you can use in the Krypt that boost the chance of you getting a higher quality item. IMPORTANT NOTES: The first time you donate, you will always get a set Key Item for the Krypt for progression. It doesn't matter if you spend 1000 or 50,000 Koins, you will always get this item. For the first time donating, be sure to only give 1000 Koins so you don't waste any of your currency. Secondly, there is an achievement/trophy assiocated with this Shrine; if you spend a total of 50,000 Koins in donations, you will get it.
- The Kollector: Only appears at certain times, but it seems you can guarantee him to appear by using certain konsumables. When you speak to him, he will offer 5 random trades. Each of these trades require you to use one of the Kollector Trade Items found in Chests I mentioned above earlier. If you have the item(s) he wants, you can trade them in return for FIXED Skin, Gear piece, or Augment. Can be found in Goro's Lair at these coordinates: 6467, -1396. UPDATE BY @Inzzane_79
- Fire Spider: In Goro's Lair you will eventually get to a Kytinn Hive area, where Fire Spiders roam and try to kill you. It seems the first one you kill (by using your hammer) will always reward you with a FIXED D'Vorah Skin called "Water Strider" I believe.
- Reptile: Once found, he will run away and you will have to try to find him. You can only see him with the Blindfold on, and when you hit him with the hammer, he will reward you with 200 Souls. So far he has been found at 3 different spots: on The Pit bridge that needs to be repaired, and in Goro's Lair twice. He may be at other locations, but we don't know. UPDATE BY @Inzzane_79
KOMBAT KAST 4/24/2019 UPDATE w/ NEW KRYPT INFO:
When you enter The Krypt, ALL players get the same items assigned to chests. It's just where these items are at exactly is randomized. There are currently 600-ish chests in The Krypt, and if two different players were to buy them all, they would leave with the exact same rewards. Again, all of the rewards are the same, it's just that the location of these items are randomized. Obviously, you can replenish chests for new random rewards.
Updates will be dropping soon that will lower the difficulty of Towers of Time by nerfing things like the unblockable rockets and also reducing how often they appear. Towers will also reward more Koins allowing you to unlock things in The Krypt faster.
There are no direct Krypt updates coming that has been announced, so the way that Chests work doesn't seem to be changing any time soon. HOWEVER! In the future, all players will get
500,000 Koins, 1,000 Souls, 500 Hearts, and 1,000 Time Krystals for FREE. This is enough to get a lot of Normal Chests, 10 Soul Chests, 2 Shao Kahn Chests (or 5 Hellfire Chests), and 2 Skins from the in-game shop or other "premium" items of your choosing.
You can also spend Souls to progress in certain areas of The Krypt, so it may be worth saving those for that.
