It looks like you are referencing a specific release string for a pirated or cracked copy of with the Ragnarok DLC (2017), version 1.47 , likely from a scene group (the trailing -G possibly indicating a repack or group tag).
If you are looking for a "piece" in terms of a specific item or quest component within this version, here are the most notable additions found in v1.47: Key New "Pieces" of Content The 10th Mastery (Rune Mastery) Titan Quest: Anniversary Edition It looks like you
: A 10th mastery that allows for 45 total class combinations. The Runemaster is a "magical warrior" specializing in both spells and weapon-based combat. Level Cap Increase : The maximum level was raised from 75 to Accomplished Hero Feature Level Cap Increase : The maximum level was
: In a long-requested cosmetic change, characters gained a dedicated gear slot for leg armor (pants). Deep Look into Gameplay & Balance Instead, he touched the chest of an elder
When the battle ended, the stranger did not retreat. He did not die. Instead, he touched the chest of an elder who lay dying on the quay, and the man’s eyes opened wide as if seeing the whole of the world at once; then he whispered a name — the first name in many ages that should not have been spoken.
The update was a specific build released shortly after the DLC's launch to stabilize and refine the new content. DLC Review: Titan Quest: Ragnarök - Gold-Plated Games