FS1 Tech Room Description
While the Demon-class Destroyer is easily one of the most massive ships we have yet seen, it is not the biggest or most powerful in the Shivan armada. However, it is still quite dangerous, with a plethora of missile turrets and two full squadrons of fighters. It is suggested that these capital ships be destroyed by bombers, as all cruisers that have attempted to engage a Demon have been destroyed.
The Demon is a Class A threat in any allied system.
FS2 Tech Room Description
The SD Demon class of Shivan destroyers is much smaller than the Lucifer class but very heavily armed and extremely dangerous. Demons are known to carry numerous wings of fighters and bombers.
The sheer number of missile batteries on a Demon can make it very annoying indeed in FS1. In FS2 these missiles are less of a threat, and the posistioning of the Demon's flak guns and AAA beams makes it possible to knock out one weapon and leave much of that side of the ship defenseless. Unlike the Ravana, however, expect the Demon to take some severe punishment before it goes down. Also expect those main battery turrets to take severe punishment before being knocked out.
Surprisingly, the Demon's hull strength increases sixty percent between FS1 and FS2. This inadvertent bug undoubtedly made a few FSPort missions much harder. Now that the Port team knows of the problem, it has been fixed in the next release. :)
The HP increase was probably meant so that the Shivans would have a decent destroyer in FS2 other than the Sathanas; the Ravana has powerful frontal beams but weak flanks. The Demon's beam weaponry is relatively weak (two LRed and one SRed), so apparently [V] increased the Demon's hitpoints at the last minute to make it superior, or at least equal to, the Hecate and Hatshepsut.
An admirable destroyer, but less capable at destoying warships or fighters than the GTVA destroyers.
I have to disagree with the previous commenter very much. The Demon is slightly less capable at taking out fighters than the Hecate and Hatshepsut but it is much more capable in an anti-capital ship role than any GTVA destroyer, unlike its couisn, the SD Ravana.
This ship has the weakest beam firepower of any destroyer in the game- one SRED and two LReds. Even the Ravana has one more SRed.
All Shivan vessels are rather poorly armed in comparison to their GTVA against fighter and bomber attack, but for most part better armoured, often better armed than their equivalents in capital firepower. Horrible at defence and escort, my best guess is that they're designed for large fleet actions or to carry fighters.
The Demon appears to be more of a defensive destroyer, given that it's main guns are not forward-facing. Any easy target if attacked from the front.