DEATH NOTE Killer Within
40 Achievements
Steam
Veteran Investigator
Perform 50 Canvas Tasks
30.1%
How to unlock the Veteran Investigator achievement in DEATH NOTE Killer Within - Definitive Guide
Canvas Tasks are classified as talking to the witnesses/NPCs around the map. You can only get 4 during the day at one time, with two during the day and two at night. This list can be modified if any Judgments have been passed by Kira, but over the course of going for the Platinum, you'll be spending plenty of time talking to NPCs.