Three answers per commenter as usual till 6 PM (Annotations compulsory)
Please post all your answers in one comment.
ACROSS
8 Secret always concealed by everyone else (2, 2)
9 This may be handy while making out with amazing doll! Heaven (4, 6)
10 Extravagant publicity for game (6)
11 Managed to be next to rulers to get positions of seniority (8)
12 Lead scoundrels back (4)
13 Flat gut she developed having trained on her own (4-6)
17 Keep talking about musical instrument (4)
18 Run faster! Lose top sleuth following (5)
19 Hit rhythm (4)
20 Annoyed an important person for raise (7, 3)
22 Jot down message (4)
23 Dirtier food and alcohol, I hear (8)
27 Mark's playing well (6)
28 Completely single, involved in romps and casual affairs (10)
29 Judge without hesitation about to liberate (4)
DOWN
1 Laundry can’t help? Nobody will believe (2, 4, 4)
2 Cold drink with gin? What nonsense (8)
3 Scrubs well past closing time for a fresh start (5, 5)
4 Briefly turn away to affirm (4)
5 Avoid short bypass (4)
6 Unmoved by content that explains it unambiguously (2, 4)
7 Stop advertisement (4)
14 Extremely drunk, boy lost game of chance (5)
15 Hot argument one interrupts to analyse what’s most prudent (10)
16 Neck with an extremely attractive person (4, 6)
19 Concerned if an object returned is essentially authentic (4, 4)
21 Loosely mobile obstructions! (6)
24 Limitlessly dull breed (4)
25 Acquire invention? Cue to leave country (4)
26 Evidence of leader quitting contest (4)
Across Lite version can be accessed at Dr SN 13
Enjoy.