It's very difficult to call THIS part of the game good, because I personally was very disappointed in it, especially in the DLC, which we waited for more than a year, but in the end it turned out to be filler, and only the heroine's BOSS got a noticeable development. And even taking into account that the game reached the Steam release and was translated by Kagura, I came across very old bugs that the author still hasn't fixed... This part of the series has great potential, but with very poor implementation. Even RaiOhGar was somehow more interesting.
So, despite the discount, I will probably skip this GapTax Bundle. For the same price, you can get more interesting products and they will have more content.