Who are the new Silent Hostiles?
They are tough opponents equipped with powerful buffs, including Critical Chance, Critical Damage, Critical Floor and Burning Status (Burn will be applied for 3 rounds at the beginning of combat). They will have a 100% critical chance at the start of combat for 4 rounds and they will increase their own critical damage by 350% at the start of each round (also, critical hit damage cannot be reduced below 50% of base damage) - so protecting your Ships against critical damage is key to survival (hint: Tucker might help!).
By defeating them, you get Temporal Disruptor Parts, and can exchange them for Reward Chests. You can find these hostiles in the Silent Nebula Systems, located adjacent to the Delphic Expanse, they go from level 40 to 65.
Please also check the Patch Notes for more useful information.