BASIC / Z80 Assembler / Pascal / C / x86 Assembler (Score 1)

BASIC and Z80 Assembler on a Sinclair Spectrum clone, then Pascal with some x86 Assembler - routines to enable mouse pointer, get coordinates, init the video modes, fast memcopy for video buffering. C came a little bit later with C++ following closely :) Then a lot more x86 Assembler. Afterwards, all went bad - JavaScript, Java, C#, Objective C and many more :)