Use the phantom blade for silent takedowns.

Use cherry bombs to distract 4 distinct guards.

Before altering any files, always create a secure backup of your existing progress.

Start by finding an alternate way into the compound. The main entrance will be heavily guarded; instead, stick to the rooftops and circle around to the northeast corner of the building. You'll find two open windows on the first floor to use as an entrance.

Bypass the lengthy childhood prologue, the Bastille escape, and Arno's initial initiation trials.

[Main Drive] \ Program Files (x86) \ Ubisoft \ Ubisoft Game Launcher \ savegames \ [Account ID String] \ 720

For more detailed strategies, you can consult comprehensive guides from IGN or community-driven resources like TrueTrophies. Sequence 05 - Assassin's Creed Unity Guide - IGN

Short checklist before starting

Use an AC Unity Save Game Account ID Converter tool to sign the file to your specific user ID. Wrong folder number used or Cloud Sync overwrote the file.