For detailed mission-by-mission walkthroughs, refer to comprehensive resources like GameFAQs or IGN [2, 8, 17].

Always hide bodies in dark corners, crates, or rooms where guards do not patrol. If a body is discovered, your rank will drop, and guards will go on high alert [6].

Disguises are your primary tool for infiltration. However, guards of the same type as your disguise can often see through your cover if you linger nearby or act "abnormally" [10, 19].

Kill or harm no one except your primary targets.

Ensure no one survives an encounter or sees you performing illegal acts.

If playing on Steam, version 1.01 is often recommended over the standard version as it restores certain censored content and provides better guard AI behavior [7, 22].

Never blow your cover or let guards find a body you've left behind.