In the past few years, we have seen plenty of promising exoskeletons that let disabled people walk and live in a more independent fashion. The Servus-RGS-Adapt Exoskeleton is another one that lets users walk without a walker. It works on flat surfaces and slopes up to 7-degrees.
As demonstrated in the above video, these adaptive foot units from Fraunhofer IPA Group simply increase the mobility of the wearer. More info is available here.