Although this game using a tape with the number 5 on the 10g weight to make the 15g of powder, it is actually possible to make 15g of them with just a 10g weight. First get 3 cups of 10g powder so you have total of 30g of them, then you split the 30g powder into two equal part using the scale, then you can use one of the two parts for your duty.
To get the Hard badge faster, I recommend first earn some monkey money by grinding some easy/medium maps, and build the Lv.3 building for Dart Monkey, and you are ready to challenge an expert map on Hard. For me I chose the "Clock" map. Start by place the Free monkeys and few more monkeys by cash, save money for the Banana farm, as well upgrading some of those monkeys to (2,3). Do not forget to build a Monkey Village for those monkeys afterward since it can make lots of useful buffs. On the later waves upgrade one of those Dart Monkeys to (2,4) and you can use a skill to turn all of those Dart Monkeys into Super Monkeys!
Tried the iOS ver. Multipling and Dividing mode is fun, but let the player able to disable the glowing effect on the edge numbers while the numbers are right, and disable the current number shown while you click/tap the number on the edge, since this game is perfect for training mental arithmetic. Also, >10 multipling was fun and hard, why that is not present in the game?
It said the robots were built in error so I have to build a machine to fix it, but in the last bonus level "Metatron", I have feeling it was not constructed at all......
For anyone that want to play this game, You can play it in the JayIsGames, which you can play them perfectly and even in high-res.
Here is the link of the first chapter of Phantom Mansion series:
https://jayisgames.com/games/phantom-mansion-red-chamber/
You can change the game name in the link to play the other chapter.
You can found the names of those chapters here: https://phantom-mansion.fandom.com/wiki/Category:Phantom_Mansion:_Spectrum_of_Souls
We will make your paths to the end. We will clear those hazards we can see.
We do not afraid to death. We do not afraid to pain.
Sacrificing us and protect our king. We all live only for you.
...............................................................................................until we finally saw your childish wish to become never granted.
Is it possible to beat the 4000K mode without any Bonus Shop upgrading and over max upgrading? YES!!! After lots of days to grind money, I finally did it using Omega Shuttle as body, Launch Pad as launcher, four Omega Rockets as stages, and four Fuel Canisters as boosts. While using my sets above, every rocket will pulls you up about 1000K metres, and while I reach the goal the last rocket is almost empty, which I can see the fuel meter is completely black. Also, I disabled all the bonus upgrades but the money bonus, and used four +100 Money Turbines while grinding money since even if you disable them, you will still have to grind a lot.
 "pandas BIG adventure"){kind=icon}
 "I Am An Insane Rogue AI"){kind=icon}
 "Level Up!"){kind=icon}
 "Elements"){kind=icon}
 "Bloons TD 5"){kind=icon}
 "Scriball"){kind=icon}
 "Rullo"){kind=icon}
 "Manufactoria"){kind=icon}
 "Protector IV.V"){kind=icon}
 "Phantom Mansion: The Red Chamber"){kind=icon}
 "Dibbles: For The Greater Good"){kind=icon}
 "Dibbles 2: Winter Woes"){kind=icon}
 "Jahooma's LogicBox"){kind=icon}
 "Learn to Fly 3"){kind=icon}
 "blue"){kind=icon}
 "World of Talesworth"){kind=icon}