Here are some tips:
#1: use the axe only when he decides it's time to die.
#2: don't use axe while running, it makes it to where you can't run anymore
#3: using the soundmaker makes it to where sketchy goes to break it up, use it wisely or he might get you, just don't use it while you hit him with the axe.
#4: if you work hard and kinda break sketchy's health bar, it will restart the card, if I could I would make it where there would be a animation to, but it's going to be in future updates.
#5: clicking on the top card doesn't do anything, there's no secrets.