.... Havent found the means to increase strength and agility....
Hints for Charisma, Strength, Agility and Perception
Strength is - as far as I got with a fresh start - either in mansion > guest room > after you triggered "sleep" > ...train...
or
at Elsa's House after you wake up with same options
For agility I had to look up the wt-file in this thread, which is honestly not the best.
Agility is related to Isabell, who you meet, when Andrea has enough love points to tell you, she was robbed.
You will meet "a girl" outside mansion, you will meet "a girl" outside at pub, you will finally track down that girl at promenade where she will tell you, she's Isabell.
If you impregnate her, your game is over as there is some programming to be looked up. In this case, she will never appear at promenade again and you will not learn "Agility". You could play further on and instead of robbing the ship for "The lender" beat him to death with enough strength and "perception" but at the latest at the task to enter the basement, you will get stucked without agility.
So, don't fuck Isabell at first when the choice to comes up.... In the walkthrough it says there will be an opportunity to give her flowers when you punch a girls face when the option appears but there isn't such an option for Isabell appearing in this case. So, that's the second "don't do" and some programming to be looked up.....
So, make a save, if you would like to bang her at least once....
"perception" is at park > take a walk > walk further
Charisma is once with Bob in park (purchase weed several times) and some in bookstore at mall.
To get some money, go to casino > trigger every green figure to sum up the bet > trigger your choice (mine is 13-24) > if you didn't win, try the "back" button
("on repeat" to stressless funds)