Tracy Rucinski and Tom Hals In a case full of twists, Caesars Entertainment Corp (CZR.O) late on Monday won a two-week extension on a shield from lawsuits worth billions of dollars just days after a different U.S. court allowed those cases to proceed. Investors are suing Caesars for reneging on its guaranty of bonds issued by its operating unit, Caesars Entertainment Operating Co Inc, or CEOC, …