They help you remember time getting away from fortress palisade? (9)
I believe the answer is:
keepsakes
'they help you remember time getting away' is the definition.
The definition suggests an adverb but the answer is not.
'fortress palisade?' is the wordplay.
'fortress' becomes 'keep' (I've seen this before).
'palisade?' becomes 'sakes' (I can't explain this - if you can you should believe this answer much more).
'keep'+'sakes'='KEEPSAKES'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for keepsakes that I've seen before include "Mementoes" , "Souvenirs" , "Seventeen [MEMORABILIA]" , "Relics" , "Mementos" .)