Even if you're using the mouse controls, you can still use the keyboard for button presses. Pressing X for the sub weapon is a lot easier than double-clicking while using Matt, for example.
Some achievements are quite impossible. The second level of taps requires 750k lol... even with 10 taps per sec it takes 24 hours to complete... not to mention higher levels
The wood element guys are just too weak, archers and druids will "miss"... Beaten Very Hard with Russians, they have a higher income than the Americans (weird lol)
 "Idle RPG"){kind=icon}
 "Monster Clearer"){kind=icon}
 "Trader of Stories - Chapter 1"){kind=icon}
 "Royal Heroes"){kind=icon}
 "Medieval Cop - The True Monster"){kind=icon}
 "Bullet Heaven 2"){kind=icon}
 "SkillQuest"){kind=icon}
 "Tap Adventure"){kind=icon}
 "50 years (graphical)"){kind=icon}
 "World's End Chapter 2"){kind=icon}
 "Lethal RPG: War Begins"){kind=icon}
 "AdVenture Capitalist"){kind=icon}
 "Shadow Era"){kind=icon}
 "Kids Vs. Santa"){kind=icon}
 "Crystal Story II"){kind=icon}
 "Socrates Jones: Pro Philosopher"){kind=icon}
 "World's End Chapter 1"){kind=icon}
 "Ninja Slash"){kind=icon}
 "Rokilot: The New Word"){kind=icon}
 "Legend of the Void 2"){kind=icon}
Try refreshing the page, also make sure you have a stable internet connection since the game loads data as it is called.