I mean, if you are just short of time you can just break the rules but have a note at the start of your game saying where you used other sounds and where you got them. I wouldn't want your game to suffer just for a technality..
No no, I'm just saying it's better to get something done than bang your head forever... although just making walking or hitting sound effects shouldn't take 8 hours lol
Haha no I've actually really enjoyed being limited, I feel it engenders more creativity! I too have been hitting things and it's been fun to play as a sound designer :D