This difficulty is the easiest in the game, and it is generally considered to be more forgiving than the other difficulty levels. Enemies are less aggressive and have less health, and the game gives the player more lives and continues.
Hard: This difficulty is more challenging than Normal, but it is still relatively forgiving. Enemies are more aggressive and have more health, and the game gives the player less lives and continues.
Very Hard: This is the most challenging difficulty level in the game, and it is very unforgiving. Enemies are extremely aggressive and have a lot of health, and the game gives the player very few lives and continues. This difficulty is not recommended for beginners or casual gamers.
In addition to the three main difficulty levels, there are also a number of secret difficulties that can be unlocked in the game. These secret difficulties are even more challenging than the Very Hard difficulty, and they are not recommended for anyone but the most experienced Sonic Heroes players.