Subtle insanity gives a +3 on constitution and strength checks. It gives a -1 on all social and persuasion checks. The character feels more prone to rage than others, and feels more insulted by slander. When something stands in their way, be it a door or a monster, they feel inclined to annihilate the interference. You gain the following flaw: "Retreat is worse than death. I will obliterate all opposition, or it shall obliterate me."