Just add {pg}{end} immediately after the word "unpacking." and that dialogue branch will run then trigger the end of the game. (The pagebreak is just if you want the dialogue to play on the last game screen rather than over a black screen, you can take it off and just use the {end} code if you don't care about that.) 

I'm not seeing the {end} tag on the code you've shown, so I'm guessing you've accidentally added the ending outside of the if/else part of the dialogue, so the game is reading it as an absolute rather than part of the if statement.

Another way to fix it is to go through the non-code part of the bitsy editor. Wherever you have the lil end box (the one that says "end     stop the game") in the dialogue, click on it once, then click on the up arrow of the arrows that appear to move it up the dialogue chain until it's in the correct position.

Hope that helps!