Summary
Seer: Widely considered the most powerful investigative role for its ability to directly identify a player's team each night.
Common mistake: Only talking to dead villagers.
Better play: Use the dead to confirm wolf kills. Ask dead players who they think is suspicious. If a dead villager says “Player B was acting wolfish,” you now have semi-confirmed info. Also, fake being a random village role alive so wolves don’t target you early.
Doctor / Bodyguard: Avoid revealing yourself too early. If you must claim, try to "counter-claim" (CC) someone else to force the wolves to choose between two targets.