• Updated Tainted Cain's recipe system to allow golden pennies, golden pills, golden batteries and poop pickups
  
  
• Tainted Cain's crafting recipes are now slightly more consistent (high quality pickups are more likely to yield high quality items)
  
  
• Most of Tainted Cain's crafting recipes are now generated based on the seed of the current run, aside from a few fixed recipes
  
  
• Now you can buy pickups by using bag of crafting

D1 will be useful for you. When used, it duplicates a random pickup item in the room. To open D1, you need to complete the Greedier Mode as Isaac.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2551259418

First, you should create D1 to make life easier. It will help to increase the required resource, and to make D1 more efficient, create a Car Battery, and a Battery Pack to start duplicating batteries.

Then you can create your favorite set of items. Links to sites with recipes are listed below, and also a link to all items with a description, if you suddenly do not know what the listed artifacts do.

REMEMBER! Destroying an active item to get a new one spawns pickups based on the room you do it in, so do it in secret rooms for bone hearts and curse rooms for rotten hearts.

When you have rooms with pick up items, don't rush to take everything. They can be replaced by other, more useful items using D20.

If you are missing something specifically:
Cards - Booster pack;
Pills - Mom's coin purse;
Luky penny - Dads lost coin;
Nickel or Dime - Wooden Nickel.

You can also create an R key to reduce the complexity and avoid repeating the process of creating a favorite set of items.

Actually, this is the whole strategy. If you are worried that you will not be in time for Boss Rush and Blue Womb, you can use Mama Mega!

And to carry another artifact and D1 you need Schoolbag

With this mode, everything is much easier. You just need to create 4 Steam Sale and then create a new set for the destruction of monsters and Ultra Greedier.

It is worth considering that the store does not always have access to cards, pills, black hearts, runes, batteries, and also because of the rarity of eternal, gold, bone, rotten hearts, a golden key, a charged key, a golden bomb and a lucky penny, I suggest a cheap set of items that is not difficult to collect in the conditions of the Greed mode:

Since the Repentance expansion added adequate True Co-op support, this gives your friend the ability to help you to complete other characters with Tainted Caine. Everything is the same as for one player, only with the deduction that a Tainte Cain does everything for you, and you help him to collect at the start everything he needs for discounts and from time to time grab what he needs from the store. And in order to get access to all the items without leaving the store, your friend Cain should also create Chaos.

In this case, it's a bit more complicated. In any mode, you can create a Clicker to change your character. The only problem is that on the new character there will no longer have the ability to craft, so make sure that you are ready.