Solution to 1D has been deliberately left unsolved and is to be answered only by a non-regular / novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to answer, if not solved by 1 PM.
ACROSS
1 Stenographer is tawdry, lacking substance with constant small talks primarily (6) TYPIST {Ta..rY}{PI}{S}{Ta..s}
4 Seek a point (6) ASPIRE {A}{SPIRE}
9 Press coverage ultimately was massive (4) HUGE {HUG}{c...gE}
11 Constant hail and rain at the borders leading to a tunnel (6) CAVERN {C}{AVE}{RaiN}
12 Rice came running for dessert (3,5) ICE CREAM*
13 Function outside college? Be sure really (9) SINCERELY {SIN{C}E}{RELY}
15 Tired judge and lawyer retiring to bed discarding first brief (5) JADED {J}{DA<=}{bED}
16 Clash in college union (5) CLINK {C}{LINK}
18 One very clueless, lacking line and class to pinch a type of figure (9) ISOSCELES {1}{SO}{CluELESs}*
22 Immature, green and soulless, partying behind university (8) UNDERAGE {GREEN+AnD}*<=>{U}
23 Indulge with commanding officer, guards and stranger (6) COSSET {CO}{SS}{ET}
25 Indian cricketers, say, use lobby in trouble (4,2,4) BOYS IN BLUE*
26 Aruna belligerently strangled the first victim (4) ABEL [T]
27 Leaders from Tamil Nadu irritated regarding antagonism, devolution, equality leading to outburst (6) TIRADE Acrostic
28 Withdraw ill-made decree (6) RECEDE*
DOWN
1 Tamil Nadu's basic problem is saving north Adyar inlet, one getting huge waves (7) T?U?A?I ()
2 Irritate Kamala Harris, say, on retirement before start of election (5) PEEVE {VEEP<=}{El...n}
3 Tool found at bridge near corner road (7) SPANNER {SPAN}{NE}{R}
5 Scrap metal one pushed forward (6) SLIVER S(-i)L(+i)IVER
6 Drunk with wines essentially, Brian & Ted are footloose (9) INEBRIATE {wINEs}{BRIAn}{TEd}
7 Lift given by new valet behind the last gate on East (7) ELEVATE {VALET}*<=>{gatE} on {E}
8 Small weaknesses lead to pains masking problem by scoundrels (8,5) ACHILLES HEELS {ACH{ILL}ES}{HEELS}
19 Release on screen (7) SECRETE [DD]
21 Be bold enough to capture North, some damage can be repaired (6) DARNED {DAR{N}E}{Da...e}
24 Fish found on coast (5) SKATE [DD]
Reference List
Constant = PI, Small = S, Constant = C, College = C, Judge = J, Line = L, Class = U, Guards = SS, Stranger = ET, Road = R, East = E, Answer = A, League = L, Spain = E, North = N