I'd really like to know how the achievement multipliers work. The numbers get really weird and large really quickly, and I honestly don't get the pattern, granted I haven't done a significant amount of math on it.
I suggest you drastically revamp your energy and special system. It's pretty quickly where you can reach a max energy/ energy regen where you can special at all times, even ignoring the warrior's 20 second long special. I suggest you change the special so it costs more depending on level, or perhaps a percentage of the max, and is more powerful depending on how much energy was consumed. This makes it meaningful to actually get energy beyond the previous amount. Also, I've found that backstab does significantly less than normally attacking at high damages.
Could you make the upgrades actually useful after retirement? I've noticed that except for the damage upgrade, all other upgrades scale linearly. Health and energy, both max and regen are useless because retirement items give more than enough to recover over the amount I can use if I special constantly, and all monsters deal more damage than my health by a factor of thousands. Granted, I'm fighting monsters something like a million over my level, but it seems that because damage scales nonlinearly, I can actually get my damage upgrade to be significant compared to the amount that I get from vet items. I'd like to be able to upgrade health so I can actually survive getting hit by a mob that I can one shot. Right now, I'm fighting level 1000000 monsters, with 4204 vet gear, and the only reason I can is because I can kill them before they hit me. The only stat worth upgrading is damage.
Could you make an option to buy an upgrade as many times as you have the money for instantaneously? When you just want to buy the damage upgrade at 25 billion each when you have 100 trillion, it kind of takes a while.
So I just hit the 300 of each asset mark, and I was wondering, why does the cost per building decrease from Newspaper to Oil Company? Is there something I'm not getting?
Since we have the item filter, it would be nice if we could have a pet filter. For atk/defense/magic/balance and maybe for level. Skills would be nice as well.
Could you just add how much we get from each level the same we we see what we gain from each year? Or at least, a little plus next to the stats with a number to tell us what we gain.
Could we have a sorting option based on rarity as well? It would help if so you can more easily sell all of the lower quality items without looking at the color of each one.
When does the CP in the top left change? It seems like it only refreshes with level/age or something, as even when I unequip weapons or change titles it doesn't change
The last level is completely impossible. Or at least, it s impossible without premium upgrade. Even on easy, the enemies outnumber you by absurd amounts, and the elvish tavern at the top right doesn't help you, since it costs too much money for units that don't even compare to your own or the enemy's.
 "Trimps"){kind=icon}
 "Idling to Rule the Gods"){kind=icon}
 "DPS Idle"){kind=icon}
 "AdVenture Capitalist"){kind=icon}
 "Battle without End"){kind=icon}
 "Necronator 2"){kind=icon}
 "GrindQuest"){kind=icon}
Yes. I am making this change.