collect berries by pushing space while by a berry bush your axe head has to touch the berry bush for you to collect! then fire your berries at the zombies by pushing f and try to destroy the enemy base by hitting it with a total of 15 berries before the zombies destroy your base.also dont forget to eat or you might starve . you can eat by clicking on the berries in your inventory and dont try to collect more than 10 berries bc that is all you can hold.