Need huntress/ranger with a lot of hp to leave at hint 2 for last round (Basically is a wall for the boss, stay behind it so boss attacks this hero).

Also need dps ranger/huntress. I use ranger with honeygun but dragonslayer works good too.

Place auras execpt ensnare and get all chests

Place traps.

BB and reflects.

4 Mortars, 3 boss side, one other side.

1 Dst facing west. 

Bring in TB and tower mover, start wave and start tb then use baby old one to get mana and place all 8 LT, up the BB with extra mana. Move west gas trap close to core and remove jester from the game. Swap app to ini boost and upgrade the mortars and lts as much as you can until boss wave. Boss wave keep TB in and swap to dps ranger/huntress then add the boss bait and an extra. Using tb or aura monk place the ensnare aura anytime after you are done with ini boost and before boss spawns. For boss, TB and HB when it spawns then darkshot it, it should go for bait hero and you can sit behind and spreadshot it, mortars will do a lot to it too. 

Good Luck.