Using 2N2222 as level shifter for TIP127: simulation works, circuit does not
Now i feel utterly stupid... The guy at the counter gave me different transistors from what i requested, though he didn't bother to point that out: turns out i currently own the P2222A, not the 2N2222, which the datasheet clearly shows has a reversed pinout.

Thanks to @brhans for the precision in the comment and everyone else who helped me figure this out.