So I came back to my old home (same city), after that awful incident.
Despite me wanting to trash the whole place, after my friends arrived to pick me up and the stuff I managed to get back from that thief, they talked me into keeping my head cool and confront the sucker once he came back, which happened a few minutes later. I got my stuff back, but denounced him with the authorities and are now in a legal paperwork to put him behind bars (which wouldn't be the first time for him). I talked to other tenants and they all reported to having had several personal items stolen, some of which were found in his apartment. The missing ones were sold by him in the black market.
I managed to get back online by going to the phone company to ask them to install my stuff and account here too, since it's more or less in the same area (roughly a dry river away).
Sadly, not all of my things were recoverable. My Game Cube, US PS2 and Genesis are lost. My savings, well... gone with the wind...