It's something you do in the course of your first reset, so it's not really hard. Just needs some time and money. Use Detective Kaine and the Gold Panda to help you earn gold.
Survivors are smart enough to run away when the barrier is broken but too stupid to move when a knife wielding zombie is close enough to stab them in the face.
I hope there have more tasks not only just telling us to buy deluxe weapon pack. There may have some tasks that tells you to use 'Splitter' three times etc. and you can get Tank Coins from them. There should also have daily prize too! + if you agree.
I'm not sure if you're aware of it, so I thought I better share it: Whenever the dragon flies on "Beresad's Lair", you can click his gold. This gives you 100 gold each time. Pretty helpful.
It's something you do in the course of your first reset, so it's not really hard. Just needs some time and money. Use Detective Kaine and the Gold Panda to help you earn gold.