Hello Dol,
SAP HANA Tools are not available on the Mars update site until now. Please check the avaibility matrix on SAP Development Tools for Eclipse.
What I can see from your screenshots is, that you have installed the SAP HANA Cloud Platform Tools from the Mars update site. The platform tools do not contain the HANA perspectives you did look for. These are just contained in the SAP HANA Tools.
You installed the tools from the Luna update site now. Please consider that issues can appear using Luna HANA Tools in Mars.
Best Regards,
Florian