Add Zombie kill-count, missing achievements & Last Stand modes

I'd love to see the "Leaderboards" menu from the mobile versions of PvZ added to Replanted, alongside the "Undead Space" achievement. 
This section allows you to see how many Zombies you have killed in total while playing on the selected profile, and allows you to see your records in other parts of the game with the items at the bottom (eg. the heavily damaged Wall-Nut displays your survived flags record for Last Stand : Endless (another thing that should be added to Replanted!)). 

Alongside adding the Leaderboards menu and a dedicated Last Stand menu with different modes like in the mobile versions, I'd like to see all the additional achievements that are present in the mobile versions to be added in Replanted too!