[使「し」][役「えき」][受「う」]け[身「み」] => Imperative N4
Causative, Passive, Volitional
ときている => Because of A N1
Reason, Result, Response
を[契機「けいき」] => As a good opportunity A, (do) B N2
Information, Report
に[先駆「さきが」]けて => The earliest, very first in A; Ahead of A, in advance of A N1
Time, Situation
かける => Is doing, haven't finished yet N2
Will, Decision, “Doing”
に[先立「さきだ」]って/に[先立「さきだ」]ち/に[先立「さきだ」]つ => Before A occurs/takes place N2
Time, Situation
に[決「き」]まっている => A is a given, A must be the case N2
Information, Report
[続「つづ」]ける => continues, to continue to N4
Secondary Verb
をきっかけに => With A as a good opportunity/chance to B, Using A as a time to (start) B N2
Information, Report
きる => To do A completely/exhaustively/to the end N2
Potential, Possibility
ぬきにして/~ぬきで => Exclude A; Stop/end A; Without A N2
Miscellaneous
おまけに => A. In addition, B N2
(Not)only, (Not) even