The .part1.rar extension indicates that the game was split into multiple files for easier downloading from third-party sites. To use this file:
: The game features an "all-new story" campaign alongside a "Scavenger" mode where you gather resources to upgrade Alexandria. The.Walking.Dead.Onslaught.part1.rar
For a safe and official copy, you can find the game on platforms like Steam or the PlayStation Store. The Walking Dead Onslaught Prologue - Walkthrough Part 1 The.Walking.Dead.Onslaught.part1.rar