A polished version with the official/canon ones :)

Ending Time Octet [Full Collection]

【Ending Time Octet】(Phase 2)Octuple The Hatred

Ending Time Octet phase 3 Lamentableners UST 10 (UNOFFICIAL)

Original: https://www.bilibili.com/video/BV18G411T7FL?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】??? OST - 001 The Wonderful Reverse

Original: https://www.bilibili.com/video/BV1dg411p7PV?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 1 OST - 003 Timeline Intersection

Original: https://www.bilibili.com/video/BV15o4y1P7vh?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 1.5 OST - 005 But They'll Refuse

Original: https://www.bilibili.com/video/BV1Tx4y1v7RW?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - Killer OST - 008 Boomeranged

Original: https://www.bilibili.com/video/BV1nw4m117Pu?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - UKB OST - 010 Karma Source

Original: https://www.bilibili.com/video/BV1z9Whe6Ezu?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - ULB OST - 012 The Genocide Ends

Original: https://www.bilibili.com/video/BV1rH4y1Y7AY?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - AGEM OST - 013 Fistoflatning

Original: https://www.bilibili.com/video/BV1vEW6exE26?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - Insanity OST - 014 Insanity Increases II

Original: https://www.bilibili.com/video/BV13hsteXEkS?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 2.5 OST - 007 No Cheating! II

Original: https://www.bilibili.com/video/BV1dXHGerEck?vd_source=4a80ab65efa6118e86fddc7e7511feab

【Ending Time Octet】Phase 3 - COTV OST - 009 Untitled Composition I

Ending Time Octet phase 3 Resurrection of the Fallen UST 009

After phase 2, Chara(1980) and Sanses were exhausted. Chara(1980) only could attack one of the sanses. Others would teleport to seek assistance(To the simulated AUs). Sans who has been attacked has no strength to teleport， staying here to procrastinate.
Because of Gaster, attacking COTV was useless. COTV would extract Chara’s determination to revive HM. For COTV, HM devoted his life to blocking one hit. (OST-009)

【Ending Time Octet】Phase 3 - COTV OST - 009 Void Echoes II

After phase 2, Chara(1980) and sanses were exhausted. Chara(1980) only could attack one of sanses. Others would teleport to seek assistance(To the simulated AUs).Sans who has been attacked have no strength to teleport，staying here to procrastinate.
Since Murder!Sans had committed genocides, they achieved high HP, while Chara got debuffed and tired out, being unable to get through Murder's HP in one hit.

【Ending Time Octet】Phase 3 - Murder OST - 011 Scarlet Storm III

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Ending Time Octet [Full Collection]

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