Soul Hackers 2

Risky Enemies show up randomly as blue mobs instead of the usual red ones and are very powerful. They cannot be knocked down like regular enemies and might pose a challenge if you go in unprepared.

The good thing is that the set of demons you face when going into battle with a Risky Enemy will always stay the same for 10 levels, after which there will be an entierely new set (and will always be higher than your level). This means that you will fight the same set of demons irregardless of which dungeon you're in until you hit the next 10-level bracket, so you can farm your current set easier by looking at their weaknesses and equipping demons accordingly.

Risky Enemies give a ton of money and exp so it's always worth it to fight the ones you come across, especially when you have low level demons in your current stock. Unequipped demons in your stock can also gain exp and can even gain multiple levels in one battle.