Across
Event held in European chamber (4,5)
Sort of light in swamp (5)
A deterrent to sound triumphant after false alarm (9)
Climber putting back a spike (5)
I haven't cracked this one yet — but Fifteensquared have:
[ putting back ] <=A NAIL ("a spike")
As sported by the sunburnt sailor? (6)
Wealth with no cash around extremely unusual (8)
I haven't cracked this one yet — but Fifteensquared have:
0 PENCE (0p, so "no cash") around [ extremely ] U (nusua) L
Restraint shed, starts to look excited (7)
Bishop endured being cursed (7)
End of game occupying the whole day? (4,4)
Just like a prick to be mean (6)
I haven't cracked this one yet — but Fifteensquared have:
STING-Y could indicate "like something that stings", so "just like a prick"
Switch offers resistance: turn key (5)
I haven't cracked this one yet — but Fifteensquared have:
R (resistance, in physics) + [ turn ] <=YALE ("key")
I vet Pope's redesigned headgear (9)
Nice-looking book about US state (5)
Clinics suddenly increase, extraordinary rise (9)
I haven't cracked this one yet — but Fifteensquared have:
SURGE ("suddenly rise") + *(rise) [anag: extraordinary ]
Down
Entry by Catholic in royal almanac fooled you (6)
Obsessive, I re-count change (8)
Dance the South African government repeatedly holds (6)
Not-so-soft drink, sort of cola, given to Dad (7)
I haven't cracked this one yet — but Fifteensquared have:
*(cola) [anag: sort of ] given to POP ("dad")
Girl is a sweet little thing, head to toe (6)
I haven't cracked this one yet — but Fifteensquared have:
(e)CLAIR ("a sweet little thing") with its head to toe (i.e. first letter moved to last) becomes CLAIR(E) ("girl")
Coastal road strange choice for navy to enter (8)
I haven't cracked this one yet — but Fifteensquared have:
*(choice) [anag: strange ] with RN (Royal "Navy") entering
Ponder needing to warm wine (4)
Use photo for repairing roof (8)
Den left to ventilate (4)
Unstable, like some footwear? (8)
I haven't cracked this one yet — but Fifteensquared have:
SLIPPER-Y could maybe indicate "like a slipper" so "like some footwear"
Horseman's cold nature when drunk (7)
Found out officer's about to make money (6)
Wild to stop spending, hoarding silver (6)
I haven't cracked this one yet — but Fifteensquared have:
SAVE ("to stop spending") hoarding Ag (chemical symbol for "silver")
Person going on errands heard an animal that burrows (6)
Type letters or click words in the clue