You can get utility bills by applying on Converge ISP, they installed quickly and you can request a bill ASAP for proof of address.
You should clarify if your friend is a Filipino or just living in the Philippines but different nationality. Requesting National ID is now very easy and available on public booth.
Those level 3 and 4 documents is easy to get if you have money for application, actually only utility bill will cost a bit money.
but stake only accept electric,gas, and water utility bills they dont accept internet bills
and for level 4 do you have like some exception that my friend can get easily even though his unemployed