Ok, I have already fixed moreless the investment system but I'm thinking if I should remove it or do something else.
I actually did the progress bar like that on purpose, I mean, I didn't know which way would you like it more, but yeah I can remake it for some other version ;)
Well, double potions are actually made only for Aria.
And I'll fix the thing about the money asap
Thank you for your comments and your time :D I'll work to improve the game