~こと請け合い => I guarantee ... N1
Happens next
合う => do something together N3
[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
ていけない => Suddenly... N3
Simultaneously
なければならない/なくてはならない/なければいけない/なくてはいけない/なければだめ/なくてはだめ => must N5
だけしか~ない => only N3
…というだけで => just because… N3
Cause, reason
~というわけだ => This means~ N1
Conclude
てはいけない => must not; may not; cannot N5
...といけない => If ... then it would be troublesome N2
Recommendations and warnings