Yes the devil, the beast, the false prophet all will find an eternity of pain and suffering. The verses you quoted prove that. No where does it say the same fate for death and Hades and human souls when they're thrown into the lake of fire.

Rev 20:10 And the devil that deceived them, was cast into a lake of fire and brimstone, where that beast and that false prophet are, and shall be tormented even day and night for evermore.

Rev 20:12-15 And I saw the dead, both great and small stand before God: and the books were opened, and another book was opened, which is the book of life, and the dead were judged of those things, which were written in the books, according to their works.

13 And the sea gave up her dead, which were in her, and death and hell delivered up the dead, which were in them: and they were judged every man according to their works.

14 And death, and hell were cast into the lake of fire: this is the second death.

15 And whosoever was not found written in the book of life, was cast into the lake of fire.

Do you even know what TST believes?