Puzzling new game I cracked – triumphant at last I see! (9)
I believe the answer is:
enigmatic
'puzzling' is the definition.
(synonyms)
'new game i cracked triumphant at last i see' is the wordplay.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'cracked' is an anagram indicator.
'at last' says to take the final letters.
'i see' becomes 'ic' (I am not sure about this - if you are sure you should believe this answer much more).
The last letter of 'triumphant' is 't'.
'n'+'game'+'i'='ngamei'
'ngamei' with letters rearranged gives 'enigma'.
'enigma'+'t'+'ic'='ENIGMATIC'
Can you help me to learn more?
(Other definitions for enigmatic that I've seen before include "Mysterious or puzzling, like Mona Lisa's smile" , "Puzzling, like the Sphinx" , "not obvious" , "Hard to fathom" , "Cryptic, mysterious" .)