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ACROSS

 9 Kiss faceless bum (5)

10 Expend too much energy flipping dinosaur before edges of volcano (9)

11 Marshall Mathers’ college (7)

12 Chooses to run back through memoir of St. Polycarp (4,3)

13 In Asia, Frank translated a Germanic language (9)

15 104 independent contractors at the forefront of government (5)

17 Celebrity to gobble eyeball (5,2)

18 In Guadalajara, two times the appropriate amounts (7)

20 War god takes one sign (5)

22 Baldwin turned to suppress insubordinate parts of the brain (9)

24 Braid bread around the east side of Galesburg, Illinois (7)

26 Persistent fashion that’s entertaining? Right on (7)

27 Engine component is malfunctioning? Fire it (LOL) (3,6)

28 Coming in late, Hedda is more adept (5)

DOWN

 1 Small creature, not unlike an antelope (6)

 2 Game is originally much different on International Workers’ Day (6,3,1)

 3 Native American stirred Coke here (8)

 4 Look northward in Vermont unit (4)

 5 Think again about scone, chewed and swallowed by passenger (10)

 6 In Montreal, seven unprotected lice infested with bacteria (6)

 7 Insect putting its head underneath a piece of paper (4)

 8 Draws carts bit by bit, with some repetition (8)

14 Express drama, perhaps overlooking some of the hospital dead (10)

16 Pair of Visigoths tallying nuts in a watchful manner (10)

17 Cleans fake post office rings (8)

19 Far from downtown, burn a bus after an accident (8)

21 Stigma surrounds liberal dictator (6)

23 Grant’s alternating current wire (6)

25 Whip up an activity, of course (4)

26 Scattered arcs: nine can be found in the completed diagram (4)

SOLUTION TO PUZZLE NO. 3345  

ACROSS 1 COLOR + A D(O)RIVER 9 OF TEN 10 S(QUINT)ING 11 IDLE + WILD 12 ST + ROBE 14 SP + RIG 16 SHOR(TT)E + RM 17 B(I SHOP)RIC[k] 19 NY + MPH 22 D(EP)UTY 23 RED ACTOR 26 anag. 27 AM I GO 28 TEN + ZING + NOR + GAY

DOWN 1 CO-OKIES 2 LIT(TL)ER 3 RENE + W 4 DISC[ount] + L + OSURE (anag.) 5 R(O)UT 6 anag. 7 “rise, om” 8 AG + LEAM (anag.) 13 pun 15 G(HOST + T)OWN 17 BO + DICE 18 S(UPP)ORT (pup anag.) 20 MAT(T)ING 21 anag. 24 ALAMO[de] 25 WIF[e] + I