I have some bad news to report. After 3 years of playing the game that I thought had perfect code I accidentally discovered what I consider a bit of a let down and oversight. The issue is this: while playing couch multiball and completing a run of 4 hurry ups you are awarded nothing (except the normal hurry up points obviously). Normally you would be awarded a couch lock for the streak. I'm sure some people will argue that you are already playing the couch multiball so of course you shouldn't be awarded a lock. In this particular case I don't feel that stands up that well. I think if throughout the entire rest of the game you would be given the award for something semi difficult to achieve it should be added towards advancing your next multiball. It is an earned award after all and not the regular method of activating locks (which I agree shouldn't be active during couch multiball obviously). That along with the fact that something easier to achieve, 3 hurry up i&s advance streak and all other hurry up awards are still given. If you don't get a couch lock it should at least do something like give you the itchy advance (which would be a "step down" in awards) but better than nothing or possibly activate another hurry up to allow you to go for the 5 hurry up streak and get the extra ball, maybe just a bonus chunk of points, anything really. Instead your achievement awards you nothing that I can tell. You are almost strategically better off not going for the higher award and simply cashing out at a streak of 3 unless you want to risk going for 5. I might be wrong and missing some other award you gain but from my basic experiments tonight it doesn't look like it. Welp guess I need to sell this crappy game with junk code now .
As a side note I'm curious if anyone has ever seen a garage award for lock while playing multiball and been awarded nothing or if it's been programmed to simply not award that during couch multiball. If it was thought of for this example it should have also been thought of for the hurry up awards.