It's an addicting game, but even though the more tasks you complete, it's almost as if you're right back where you started. Right back at task level 1. I was at task level 9, but I actually rage quit because I couldn't miss a SINGLE bullet/shot on the first three days. I find it impossible to do. It was like the money rises, but the difficulty rises too. Also, it's hard to survive because in the higher rounds there is a ton load of enemies who all chuck their little ninja stars all at once, which only adds to the blackness (not being racist) of the game. I couldn't see what I was going to hit which pissed me off a little. The ghosts were black too, which only blended in with the money tree only causing more damage giving a less survival chance.
Maybe if you could make this game better, I'd say you should:
-Toss in more upgrades
-Add in more colour, not just black
-Have another way to earn more starting money
One last thing is that the game got buggy whenever you would spam your weapons sometimes (meaning you'd left-click a ton of times). Overall, this game was great, but it still had it's flaws that made it a little less enjoyable.
By the way, if you're looking for the restart button, you have to pause the game and click and the words "CLICK FOR SUICIDE". But you should know that already because the author said so themselves "(Pause Menu has a suicide button if needed)".