Rui had to admit, nailing a difficult mission was one of the best feelings ever. An immense wave of satisfaction washed over him as he thought about the fact that not a single villager died. Although, one did come close.
Thankfully, there was only one hidden gang member inside the building. Rui had no idea what he was doing in there instead of joining his gang-mates, but thankfully there had only been one. If there were several and each had taken a hostage, then there would have been a bit of an issue.
For now, he was fine, but he really felt the need to improve his covert abilities. There were many missions just like this one where he felt his lacking stealth. Missions where, if he had been stealthier, he would have been able to complete them with much greater ease and simplicity.
This mission was an example. If he had a technique that at the very least allowed him to completely evade normal human senses, then life would have been far easier.