Appearantly at the very end when the red bandana guy is covering you from the zombies and you are supposed to get on the boat you can keep farming loot and xp by killing the zombies, but eventually this does run out. You kill all the zombies in Union City I guess?
So I play this game once, get bored in a few minutes, but buy the idle power level 1 upgrade, save my game, and don't play it again for two weeks. Then I get back and I have $5,994,387. Lol.
The SP system currently in-game encourages players to just google
"Best way to spend SP in contract wars". This needs to be changed. It removes individuality and discourages experimentation with different skill sets for different play styles. What is the root of this problem? How can we fix it? The root of the problem is that resetting your skills, especially at a high level, gets very expensive. To fix this the price for skill resets needs to lower dramatically. This would encourage to be experimental and creative with different play styles and different weapons, making it so all players don't just go for armor and accuracy. This would make the game more dynamic and more interesting to play. + If you agree.
I believe it would be a good idea to change the W-Tasks to work into tiers. Say you have a weapon that requires 50 LongShots to task. Doing this would give you 1-2 attachments for this weapon, that you can add personally and customize. Then the weapon would have a tier 2 W-Task requiring say 100 LongShots. This would give you 1-2 more attachments that you could add to your gun in a menu and customize. See where this is going? This would add more weapon depth and customization and I personally think it would make a great addition to the game.+ If you agree.