Figured out, first clue appears after one day, rest appear when hero levels to 5, 10. 15. 20,etc. The "unarmed statue" is the bottom one. Even magnified 200%, with paint program/app, they all look unarmed. http://i.imgur.com/bMfH4Vv.png
For those of you who don't like links
top statue, fat man in a robe, arms raised, big crack in skirt, medium 3 tier round base - not it
2nd statue - skinny girl, arms by sides, small 3 tier round base - not it
3rd statue Large man, legs apart, hands on hips, big tick across chest, tall round base - not it
Bottom statue - slim, blank face, looking left, one arm visible, short square base - Is IT!
If you have a different clue for hero level 20 hint, please post here, if we get all 4 statues identified, will save somebody else from having to clear 3 wrong paths, to figure it out :)
If UNARMED means missing an arm, aaarrrggghhhhh! Unarmed normally means "without a weapon".