In my opinion i would give this a level 2, they haven't used a range of different camera angles along with the lack of rule of thirds for the investigation scene, this isn't that much of a suspense themed opening scene, it's not engaging either and the acting is rather poor which emphasizes the jolting camera.
In my opinion this would be a level 4, they have well thought out the way in which they wanted the titles on each slide, it is discrete but also affective, the music in the background also adds suspense and is well linked in with the theme of the opening, they have used a range of different camera shots including some close ups, they have stuck well to the rule of thirds, as well as speed well flowing, it adds great suspense and the ending makes you what to see what is next to come.