Heres a tip.
Step 1.
Get to lvl 25 first without upgrading your shotgun but only bayonets and healing pellets. Just melee through the zombie with 1 hit KO. DONT UPGRADE HEALTH AS THEY WILL UPGRADE THEIR HEALTH.
Step 2.
Save as much money as you can. Try to buy the upgrade of the shotgun in one go without making this game difficult
Step 3.
Finish the game
Stop placing your wartune ad everywhere R2. Zelda is not relating and saying only male gamers will only bring you only a few players. One advice to improve: LISTEN TO THE COMMUNITY
This is it. Me and my friends are sick of it and some of them are paying. They say there is no fun dominating players easily and have no challenges. Oh, btw, at least 21 of my friends will quit. good luck ruining the game even more ;)