Standard PvZ strategies will fail you here. You must adapt to the "Brutal" economy and enemy density. Abuse the "Sun" Cheat:
Plants vs. Zombies (PvZ) Brutal Mode EX Update 1.28.1 , particularly the version associated with PvZ Brutal Mode Ex -Update 1.28.1- -Siku-
: Use Sun-shrooms (which may provide an instant sun boost upon planting in some versions) to snowball your economy. Lane Protection Standard PvZ strategies will fail you here
The "Brutal Mode Ex" take on Siku is exactly what the hardcore PvZ community asked for: a reason to return to the game after the final update. It transforms a relatively easy children's boss into a genuine raid encounter. PvZ Brutal Mode Ex -Update 1.28.1- -Siku-