i don't really see how that would pan out to be honest ;w;
it was just a fun idea that i thought of
I did something like that on one of my campaigns (im a DM in D&D): the key to reach the BBEG was a code that i divided into 5 parts, and each time one of the BBEG's main minions was defeated, i gave a bit of the code to the players. There were only 4 main minions tho, so the 5th part of the code was for them to find out.