I collected the quest without issues but after clearing level 13 completely I was only able to find the gleaming adra fragment and the engwithan machine part - I have searched the level for the final item multiple times without success. Anyone else experienced this?

Northeast of the junction chamber is a room of glowing Adra and five

Animats with a Cean Gwla. Before leaving, inspect the Cracked Animat

Armor lying on the earth by the Adra crystals. It contains the final

element needed for Tcharek: Adra Shell. This shell should be collected

for Tcharek as part of the side quest. At this point, backtrack to Level 13,

speak to Tcharek, and conclude this side quest.

Thanks.... can't believe I missed that