R40 company leve: "Protect Scout/Alchemist" are a bit broken.

[Luhy]

You can run out and look for mobs before they randomly appear and invade, thus making the final wave consist of less mobs. It puts the guy you're protecting at risk, but it makes the final wave easier to control.

[Umo]

You can run out and look for mobs before they randomly appear and invade, thus making the final wave consist of less mobs. It puts the guy you're protecting at risk, but it makes the final wave easier to control.

^This. There are mobs roaming even far from the NPC. If you don't kill them, they'll come after the NPC at the same time. At least you should kill one of them if you find it on your way to the NPC and search for the rest once you've managed to defeat first attackers.