Is this supposed to be a Cryptic Crossword??
ACROSS
ACROSS
1 - Hide it away without revealing contents (7) - SECRETE [E]
5 - Wanderer who made progress according to the book (7) - PILGRIM [GK]
9 - Fellow affected by unreasonable desire (5) - MANIC [E]
10 - Breadth uncertain when holder of the ashes gets indigestion (9) - HEARTBURN {BREAdTH*}{URN} How do we decide to delete 'D' or is it a Typo for 'breath'?
11 - Not pleasant when there's plenty of room to lose business worth two million (6) - ODIOUS (co)(mm)ODIOUS
12 - Pisces? (8) - STARFISH [CD]
14 - Unhealthy mass of fluid in tissues (5) - EDEMA [E]
15 - To commit to the charge of another (9) - RECOMMEND [E]
18 - One has the skill to achieve a smart end (9) - TRADESMAN*
20 - Walks a horse around quietly (5) - S?E?S ?
22 - Priest in order which is unsullied (8) - PRISTINE*
27 - Furnish with all that is needed (5) - EQUIP [E]
28 - Fearful cries from the elite incarcerated by Nazi police (7) - SCREAMS {S{CREAM}S}
29 - Top palindrome (7) - ROTATOR [CD]
DOWN
1 - Moons around when advanced in sleepiness (9) - SOMNOLENT {MOONS*}{LENT}
2 - Short and clear (7) - CONCISE [E]
3 - Inspire with spirit (9) - ENCOURAGE [E]
4 - Reflected sound (4) - ECHO [E]
5 - Unusual places in it for modelling (10) - PLASTICINE*
6 - Expected after real time (5) - LATER {REAL+T}*
7 - Dissolute fellow holding cash in the ordinary way (7) - ROUTINE {ROU{TIN}E}
8 - Time taken for the moon to revolve around the earth (5) - MONTH [E]
13 - Perform turn in some sort of delirium — great! (10) - TREMENDOUS {TR{EMEND}O{U}S*} ? (Addendum - {TREMEN{DO}{U}S} - See comments)
16 - Give wrong route, having cried out in fog (9) - MISDIRECT {MIS{CRIED*}T}
19 - He flew in from Barcelona via Torremolinos (7) - AVIATOR [T]
21 - Wear out tyre, you might say (7) - EXHAUST [CD]
22 - Longs for coniferous trees (5) - PINES [DD]
23 - Higher land on the moon! (5) - TERRA [E]