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At first, always prioritize the circular saw. If it doesn't appear, go for the gun, and if that doesn't appear, it's similar so pick whatever you want! This way, you can level up easily.

If you're not going to spend money, you have to watch ads. I can't clear it without watching them lol But if you keep upgrading your weapons, you can clear the hidden quests without any problems.

Excluding paying users Focus your upgrades on 1-2 main weapons, and actively utilize the 2 free upgrades you get from watching ads. This will make the game significantly easier.

The game controls and story aren't difficult, but it's tough to clear stages without ads ㅠ

It's simple haha, good for killing time.

I wish there were a few more hidden quests...ㅜ I've already finished all the hidden quests even though the time quests are still active.

There are parts that are quite difficult to clear without watching ads. I think you need to upgrade your weapons by watching ads to clear them. There are times when it's tough even after leveling up with silver coins.

I linked my account, then deleted it. Now when I try to link it again, it says the account already exists, and I haven't received the rewards. Is there any solution??

The ads are a bit much, though. Still, it's a good way to kill time and earn gems without much effort.

There's a quest in the game that involves spinning the slot machine. If you use skip motion, the quest doesn't complete. However, if you set it to 50x spin, the slot machine endlessly spits out items and then endlessly reclaims them... Make sure to disable skip and spin at 1x!