Good game
Its a good game actually
Level up the SPEED and MAX as much as you can
And unlock the very last two heroes
You will find the second last one(cant remember exactlly)
It has very strong defense and HP
Put some long range behind and keep putting the high HP hero in front
As long as you regeneration SPEED is fast enough
You can just easily beat the boss
Of course it takes time
kjrll88 about
9Heroes Defence : Zombie Invasion, vVER 1.0