Exit level VIA message block

How do you make a level like the intro level (C5) where if an info box comes up, the level is beaten?

Level C5 is hardcoded to finish when a level is complete.

You could hijack the info box routine to end the level after the message is displayed (it's somewhere in bank 5 if I remember). In case you don't want the info box to complete a level for some levels, bypass the routine using $0E or $010B ($010B if you've applied levelASM). It won't be easy though.

alright cool. thanks.