Optional Missions:
- Kill 4 gunners
- Kill 5 guards stunned by smoke bombs
Start the mission by talking to Ade. The optional objectives will become available as soon as the mission starts. Follow Prins and Torres while avoiding being detected. You don't have to be too close; you can follow them on the rooftops while keeping your eyes on them. Be wary of the gunners though; make sure to covertly take out anyone that notices you.
For your convenience, concentrate in taking out the gunners first since you'll have the chance to rake some smoke bomb kills later on. However if you want to make sure, you can score a couple smoke bomb kills on isolated guards or patrols. Just make sure you can catch up with the targets before the timer runs out.
You have to eavesdrop the targets. You don't have to be on the ground or too close to them; as long as you're in range, you'll still be able to hear them and remain in the mission. The pair will eventually reach the manor. Wait for them to go inside then sneak in the manor grounds via the bushes. Wait for them to stop and a cutscene will trigger.
After the cutscene, you have to defeat all five heavy guards. This is the last chance to use your smoke bomb to stun and kill them to count towards the second optional objective. After that, Kidd will run away. Chase him and tackle him to complete the mission.
How do I tackle Kidd before he kills Prinns?