ないと/なくちゃ/なきゃ => must do; need to; gotta do ~ N3
ちゃった => to do something by accident, to finish completely N3
なくちゃ => must do; need to; gotta do ~ N3
Necessity, obligation
ないと,なくちゃ => Must do A N3
Needs, Requirement
ちゃんと => Clear, neat, dignified, complete N3
Result status
ちゃんとする => Serious, tidy, complete N3
Result status
んじゃなかったか => shouldn't have... N4
Regret
~なくちゃいけない      => must do; need to; gotta do ~, say necessary to do something N5
Obligatory
ちょっと => a little N4
More or less in quantity
ちょっと…ない => Honestly, no (softening the tone) N3
Correction
ちょっと => Hey (call someone) N3
Order
なけりゃ => If not ... N2
Condition (hypothetical condition)