After playing for several hours the progression really starts to drag around 150 floors. Idling is kind of pointless since you have to check back every 5-15 mins to complete your missions since those seem absolutely vital (and very slow progressing). And why nerf the absorption multiply? Every upgrade is expensive and underwhelming.
After playing this game for about a week I can say that in it's current state it's not worth playing past the Qi mark. The late game revolves solely around investments and waiting around for investment news to pop up. At a certain point resetting doesn't do anything for your speed, and also the pet "His majesty" was glitched for me and didn't increase quest speed. The party system seems to be glitched as well when you get into firing recruits. Overall it's a fun time waster but it needs to be patched to be worth it.
I checked it and it looks like 5. Is there a problem with Achievement?