What happens if i use console commands?

In some video games using console commands in the game disables achievements, and might not let you earn completion for the game. One example is doom 3. This is ok if you wish to have fun in the game and not worry about achievements. But some console commands do not disable achievements because they do not affect the main storyline or game. Console commands is good if you want to see what is hidden in the game. For example their might be “Easter eggs” or hidden secrets in a game, with console commands you can see these “Easter eggs” easily with no clip mode. No clip mode allows your character to go through walls and objects so you are able to see everything in the game that might be accessible through regular means of playing. No clip mode is basically like spectating in game. Console commands are also helpful for those who wanted to spawn in game items that they could not use or change the way your player model looks.