For every new developers I recommended not to make game in sandbox stile, because it's much, much HARDER than game without sandbox. And this game a good example why...
Before free roam begin its decent game without bugs and with stile. But after it's just a buggy piece of...boring game, with nothing, but disappointing grind/points system, unintuitive interface, luck of storytelling and plot, useless tips (need URM mod to understand what triggers what) and empty with content. Visual still good.
I which there are no sandbox in this game, because half problems just disappear, but... unfortunate.