ちゃんと => Clear, neat, dignified, complete N3
Result status
ちゃんとする => Serious, tidy, complete N3
Result status
ないと/なくちゃ/なきゃ => must do; need to; gotta do ~ N3
んじゃ => If ... then... N4
Condition (hypothetical condition)
ないと,なくちゃ => Must do A N3
Needs, Requirement
んじゃない => can not, impossible to... N4
Ban
~んがため(に)/~んがための      => in order to ~ N1
なくちゃ => must do; need to; gotta do ~ N3
Necessity, obligation
んじゃないか => right? isn't it? let's~; confirmation N4
Confirm
んじゃない => confirmation of information; express surprise towards listener N4
Speculation
ちゃった => to do something by accident, to finish completely N3
~なくちゃいけない      => must do; need to; gotta do ~, say necessary to do something N5
Obligatory