By breaking endless, I mean is it possible to set up a trap layout that will stop everything in endless. At least on one map I think I have.
Currently I am at wave 173 on 'Close Cliffs' still have not lost a rift point and since maybe level 90 have not done anything other than lay traps.
We know that at some point (seems like wave 60 or 70) for the most part it is near impossible to kill anything with direct damage. So I set out with a setup that uses no direct damage traps. This setup works with the Sorceress. Can be a little tricky early on until you get a good number of traps out.
Weapon / trap / trinket selection. Polymorph Ring, Vampiric Gauntlets (with Unique 1), Ice Vent (not really needed), Push Trap, Spore Mushroom, Spring Trap, Scavenger Trinket, Trap Reset Trinket, Rift Defender Trinket, Mana Rage Trinket.
Set up Spring traps and Push Traps on most places that throw enimies off the cliffs. Tunnel areas and any other free spot have a spore mushroom, this takes a while to fill in (I am still missing a bunch of places but it does not seem like it is needed). At the last stop wave (25) I relayed all the traps so that I could set them so I could stay back from the rifts when laying new ones.
The tricks on this are until you get the tunnels filled with Mushrooms you may need to use the Polymorph Ring to take out monsters. The biggest problem up to level 100 is Mr Moneybags. He walks to the gate dragging all the charmed monsters with him. So at the gate right now I have about 15 monsters hanging around. At wave 100 it appears mr moneybags does not reappear. The only problem with the monsters at the gate, are the elemental guys, if they split I end with two monsters that are not charmed. To handle mr moneybags you can use the Vampiric Gauntlets with unigue 2 to hold him in place. I need to shot one shot every 1/2 second or so as to not run out of mana. If you hold him for about 30 secs with out him moving the game kills him (Sort of a glitch). But since wave 100 he no longer spawns so he is not pulling monsters to the gate.
Because the elemental guys are a problem with mr moneybags I was trying to always polymorph them into anything else early on, now not a problem. I just stand on the tracks taking stuff out as needed, one shot at a time to keep mana.
Money also starts being a problem in the wave 70 range (always a problem with this set up) it seems that money does not drop as much the later you get into the waves. I run and pick up coins anytime there are monster fighting on the other side of the map.
I use the Trap reset Trinket when I can to keep all the mushrooms reset.
I am going to let it run the next 12 hours or so to see if anything happens. I think you could do this on anymap with out flyers (any only the Ice Bats or an issue), I tried on Cross Fire, but I got a bug with a monsters thrown into a spot that I could not kill him so I was force to quit around wave 70.