The phrase "to see the enemy" means to recognize or understand who or what is causing harm or is against you. It implies being aware of the threat or opposition you are up against. Full definition
Traditional random battles are gone, in exchange for seeing your enemies in the world and planning you attacks. (mygameslounge.com)
Instead of randomized battles, you physically see an enemy on the map that gives you an idea of the kind of party you will face off against. (the-gamers-lounge.com)
What's more, we probably won't see the enemy coming. (newscientist.com)