The Nephilim is the medical evacuation craft for any troops or pilots from the Gothica who may be wounded. Some may say the need to open the doors to dock with the main vessel is dangerous, but once your LEGO legs have been blown off the slight risk of falling seems small compared to not getting into the Gothica medical bay.
Lots of armour as it often enters combat zones.
From the side you can see the large size of the rear compartment.
The rockets are for clearing landing zones (mostly).
Large, fast engines.
Ooo! Just like a Galaxy Explorer...
Though no Galaxy Explorer was ever so bloody!
Poor Trooper Cassidy ('Hop-along' to his crew mates.)