Gas, I only use 1 wall each lane as well

Interesting, so two DSTs total? I'm gonna try your build. Do you use gas/mines or darkness/mines?

At all 3 doors. 1 of the lanes wont have a lightning aura
If you put the 2 DST on top of the rail cart it wont get hit under the wood.

Right next to the doors? did you have three build stacks? or two and you did one on the fork?
where did you put your DSTs? I've been doing under the wooden planks in the center of the map

Build right against the door with traps/auras and DSTs,
This was also an afk build as I don't use my dps, I did have to repair walls at higher waves.
My stats were around 750-850 for the main stat on my builders

nice ^^

Dayum whats your gear and build like