Play the normal mode and use Cheat engine for half sandbox.

In case you don`t know how: open the exe in CE , "First scan" for 5 (the points you start with), use one point in the game, type 4 ( points left) search with "next scan" and so on.

Doublclick the one result left, it shows up in a new menu, doubleclick the number you want to edit, bingo.