ACROSS
1. TIMES (items anag.) 4. CHAMBERS (2 defs.) 8. SEGA (ages rev.) 9. TORQUE + MAD + At 10. PALIN + D + ROME 11. N + IN + A (& lit.) 12. RI(N)SE 14. B + LETCH + LE + Y 17. pUN(HIT)CHED 20. WYNNE (hom.) 21. ME + ET 23. WO(RDSQUA)RE (R + squad anag.) 26. WILL SHORTZ (shill warts spoonerism) 27. E + BBS 28. AT RANDOM (mandator anag.) 29. S + LICK
DOWN
1. sT(HEN)ATION 2. MI + A + MI 3. SATED (first and last letter swap in DATES) 4. CARROLL (hom.) 5. AC(UTES)T 6. BIMONTHLY (BLT, hominy anag.) 7. RAD + ON 13. SC(INT)ILLA 14. BlAH 15. bEND 16. ERNO RUBIK (I broke urn anag.) 18. CrOW(SHE)D 19. EARDRUM (murder a anag.) 22. EDICT (cited anag.) 24. SeIZES 25. UTERI (hid.)