Here’s a common hurdle. Most antivirus software (Windows Defender, Norton, McAfee) flags game trainers as "HackTool:Win32/Keygen" or "PUA" (Potentially Unwanted Application). Trainers work by injecting code into a running process, which triggers the same heuristics as a virus.
: Using trainers in online multiplayer/co-op mode is generally discouraged and can lead to desynchronization or bans. It is best used for solo play or local split-screen. resident evil 5 trainer mrantifun