Founders - OiAvogadro & Hellborn.
Step 1: Do a runthrough of the takedown and make your way to the first set of 3 crystals.
Step 2: Clear out the area and activate the crystals.
Step 3: While looking at the activate button, come to the crystal on your right hand side.
Step 4: Walk into the square and wait for the portals to spawn, then step back off the sqaure.
Step 5: Survive until the game resets you back to the start. (You can now change to TTDM if you like)
Step 6: Run through the Takedown again and when you come to the set of crystals again, the enemies will start infinitely spawning through the portal after clearing out the area. DO NOT ACTIVATE THE CRYSTALS AT THIS POINT.
Step 7: Sit back and enjoy the gaines!
Hope ya'll enjoy, definitely abuse this before it's patched