After playing for ~10-14 hours at a stretch straight, looks like need to get some rest since the final battle is giving me a whoop unlike the whole game (thus far)

Anyone here who has beat it and throw in some tips/pointers?

Hi,
After 4h, i finally beat him :)
With this deck (look pic) : [url=]https://image.noelshack.com/minis/2018/43/5/1540575373-f3.png[/url]
put 3 traps to destroy all the appearances of enemies, the rest to destroy if they are not killed. The goal is to reduce his game as much as possible

ah I managed to do it, just had to tweak strategy a bit and make it more lasting with two set of flames to manage the horde while keep a healing trinket gradually to fill in to keep the counter up even after a pass. Did the trick.