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Being a Roguelite game,Endless Dungeonwill have you visit the same districts and the same floors over and over again. Each time you start a new run, most of your upgrades will get reset and you’ll have to get them again. One of the main upgrades that you need to progress further is the Crystal Bot.
Crystal Bot is like the president of this game since you have to protect it at any cost. The only two ways your run can end is if all your characters die or if your Bot loses all its health. One of the best ways to keep this Bot alive is by getting various upgrades.

How To Upgrade Crystal Bot
You only have two ways to upgrade the Crystal Bot,one of them being permanent while the other one is unique to a specific run. Here’s how you can do this:
You also have the option to use one Dust torefresh the upgrades if you don’t like them, however, this isn’t recommended.

How To Get Crystal Shard
If you go near the Crystal Bot without a Crystal Shard, it’ll say that you’ll need one if you want to perform an upgrade. TheseShards can randomly be found in certain rooms across the dungeon. When there’s a Shard in the room, you’ll see a golden icon on the mini-map as well, but it’s quite risky to get this Shard.
You’ll have to go near the Shard and ask the Crystal Bot to go there and mine it. However, thistriggers the waves and enemies will spawn from every spawner on the map. It’s important to consider the following before you decide to go for a Shard:
As the Crystal Bot gets to the Shard, it’ll mine it for a few seconds and then start following your active Hero. Youhave to escort it back to one of the holders to stop the waves. you may also get certain upgrades where the Bot recovers some health while mining.