Blade of Chaos cave is in the SE of Dragon's map

http://www.kiya1.de/images/NERivmap.jpg.html

Sword of Gods => is in a cupboard in the middle south house of the village in the Wastelands.

http://www.kiya1.de/images/Div_Wastelands.jpg.html

Silver Breastplate => after you found the hermit and killed him in his cave => there is a hidden chest behind him with the Silver Armour.

http://www.kiya1.de/images/Div_Stalk2l.jpg.html

Bow of Hilfin => if you talk to the elf's father and mention "problems in the forest" => he asks you, if you have helped his daughter. This leads to the bow as a reward.