You can bind specific levels to keys by editing the [ProfileName].ini file found in the game's directory. For example, assigning EA CLASS=ESAM to a key can trigger hidden debug functions.
Sometimes "level cheats" refer to the four-digit codes needed to open doors and progress. Here are a few critical ones for early levels in the first game: 091772 and 5929. CIA HQ: 7687, 110598, 2019, 110700, and 0614. Splinter Cell Level Cheat
If you just want to bypass a difficult section without skipping the whole level, type GHOST in the console to fly through walls and barriers. Type WALK to return to normal. Essential Keypad Codes You can bind specific levels to keys by
On PC, level skipping is usually handled via the developer console or by editing configuration files. Splinter Cell Level Cheat