一度に => all at once N3
合う => do something together N3
~助詞+数量      => Corresponds to the verb...of quantity N5
Quantity
~からなる(成る)      => Consists of; formed to N2
~こと請け合い => I guarantee ... N1
Happens next
[合「あ」]う => To do A together/mutually N4
Secondary Verb
場合(は) => in the event of; in the case that ~ N4
~ににあわず (に似合わず ) => ~Different from N1
Evaluate
といったところだ => Display an amount/level/degree A (程度) N1
Degree/ Level/Amount