Complex sentence: Alicia can also engage an enemy in battle by coming into contact with them; in this case, there is a chance that the player will be at a disadvantage and start with an empty AP gauge.
Split into simpler sentences: Alicia can also engage an enemy in battle by attacking them or by coming into contact with them. By coming into contact with an enemy, there is a chance that the player will be at a disadvantage and start with an empty AP gauge.