So either your struggling, new to the game, or you're an absolute boss at this game that just so happens to be reading this. Well i found a real nice method for racking up points, which might help get ya a few achievements

Basically, what you want to do is attempt to always have the fruits aligned in a circle in the order of their tier. This plan can easily fail if you are too caught up with combining fruit.
This method actually helped me get achievements based on combo chains, the points that you get in a single run, and the [bold]watermelon fever[/bold] achievement