Here is the full list of all 66 Beneath Oresa achievements.
Complete a Request at Architect's Curse level 3.
Complete an Expedition with Jokan accompanied by Zakaan.
Complete a Request at Architect's Curse level 2.
Complete an Expedition with Jokan accompanied by Sohoma.
Complete a Request at Architect's Curse level 1.
Complete a Request with Jokan accompanied by Doltar.
Complete a Request with Hectos accompagnied by Doltar.
Complete a Request with Hectos accompagnied by Nereide.
Complete a Request with Doltar accompagnied by Hectos.
Complete a Request with Doltar accompagnied by Nereide.
Complete a Request with Nereide accompagnied by Hectos.
Complete a Request with Nereide accompagnied by Doltar.
Complete a Request with Nereide accompagnied by Anarak.
Complete a Request at Architect's Curse level 4.
Complete a Request at Architect's Curse level 5.
Complete a Request at Architect's Curse level 6.
Complete a Request at Architect's Curse level 7.
Complete a Request at Architect's Curse level 8.
Complete a Request at Architect's Curse level 9.
Complete a Request at Architect's Curse level 10.
Complete a Request with Jokan accompanied by Issandre.
Complete a Request with Jokan accompanied by Sora.
Complete a Request with Jokan accompanied by Nereide.
Complete a Request with Issandre accompanied by Jokan.
Complete a Request with Issandre accompanied by Sora.
Complete a Request with Issandre accompanied by Doltar.
Complete a Request with Issandre accompanied by Nereide.
Complete a Request with Sora accompanied by Jokan.
Complete a Request with Sora accompanied by Issandre.
Complete a Request with Sora accompanied by Doltar.
Complete a Request with Sora accompanied by Nereide.
Complete a Request with Hectos accompanied by Issandre.
Complete a Request with Hectos accompanied by Sora.
Complete a Request with Doltar accompanied by Issandre.
Complete a Request with Doltar accompanied by Sora.
Complete a Request with Nereide accompanied by Issandre.
Complete a Request with Nereide accompanied by Sora.
Complete an Expedition with Issandre accompanied by Sohoma.
Complete an Expedition with Issandre accompanied by Zakaan.
Complete an Expedition with Sora accompanied by Sohoma.
Complete an Expedition with Sora accompanied by Zakaan.
Complete an Expedition with Sora accompanied by 41-DE.
Complete an Expedition with Hectos accompanied by Sohoma.
Complete an Expedition with Hectos accompanied by Zakaan.
Complete an Expedition with Doltar accompanied by Sohoma.
Complete an Expedition with Doltar accompanied by Zakaan.
Complete an Expedition with Nereide accompanied by Sohoma.
Complete an Expedition with Nereide accompanied by Zakaan.
Complete an Expedition with Flynn accompanied by Issandre.
Complete an Expedition with Flynn accompanied by Sora.
Complete an Expedition with Flynn accompanied by Doltar.
Complete an Expedition with Flynn accompanied by Nereide.
Complete an Expedition with Flynn accompanied by Sohoma.
Complete an Expedition with Flynn accompanied by Zakaan.
Complete an Expedition with Sohoma accompanied by Issandre.
Complete an Expedition with Sohoma accompanied by Sora.
Complete an Expedition with Sohoma accompanied by Doltar.
Complete an Expedition with Sohoma accompanied by Nereide.
Complete an Expedition with Sohoma accompanied by Flynn.
Complete an Expedition with Sohoma accompanied by Zakaan.
Complete an Expedition with Zakaan accompanied by Issandre.
Complete an Expedition with Zakaan accompanied by Sora.
Complete an Expedition with Zakaan accompanied by Doltar.
Complete an Expedition with Zakaan accompanied by Nereide.
Complete an Expedition with Zakaan accompanied by Flynn.
Complete an Expedition with Zakaan accompanied by Sohoma.