For Sniper Elite 3 , trainers are typically created by well-known groups like CheatHappens, MrAntiFun, or MegaDev. They usually operate via hotkeys (e.g., pressing F1 for infinite health, F2 for unlimited ammo).
While trainers are popular for single-player exploration, they carry significant risks: Sniper Elite III: +7 трейнер - StopGame sniper elite 3 trainer