I first assumed he'd be rather difficult to status. The first time I fought him (on Hard) I didn't even try to status him as a result, and I still did rather well, since I have one character with over 120% resistance in five elements (the four main plus poison). He just sat there in the corner and tanked a huge number of breath attacks. However, without the ability to use attacks due to his extremely high evade (you pretty much have a 0% chance of hitting him), I mostly attacked the spawns and flung spell damage at the dragon. This worked slowly but reasonably well, getting him below half health when one turn he decided to use the Tenebrium breath three times in a row, killing my tank (who had 0 Tenebrium resistance)... and from there things went downhill. Prior to that, Astarte herself was never in any kind of serious, or even moderate, danger, because the dragon's breath attacks all went off to the side.
On the retry one of the spawns just happened to be near the dragon, so I cast Boulder Bash on the both of them, and imagine my surprise when the very first attempt to status him (it wasn't even much of an attempt, really), actually worked. From there, the rest of the fight was cake, having my attackers focus on the now easy-to-hit dragon, while the mages handled crowd control.
It is worth noting, however, that the dragon is almost entirely elemental and Tenebrium damage, so if you get a character with high resistances you can tank him extremely well, which positioned correctly can keep Astarte extremely safe.
Last edited by ScrotieMcB; 29/07/14 04:11 PM.