LJ35 LOC RWY 27L; PTK; DSNDED BELOW PUB ALT; EXPERIENCED BIRD STRIKES.

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WHILE BEING VECTORED FOR THE LOC BACK COURSE FOR RWY 27L AT PONTIAC; MICHIGAN; WE WERE EXPERIENCING MODERATE RIME AND MIXED ICING CONDITIONS WITH 2 1/2 MI VISIBILITY. ATC ISSUED US A FINAL VECTOR WITH THE CLRNC 'MAINTAIN 3000 FT UNTIL ESTABLISHED.' ONCE ESTABLISHED; WE BEGAN OUR DSCNT TO THE PUBLISHED 2300 FT. AT 2500 FT; APCH CTL CALLED US WITH AN ALT ALERT RPTING THE ALTIMETER SETTING TO BE 29.59; WHICH CONFLICTED WITH THE CURRENT ATIS; WHICH RPTED AN ALTIMETER SETTING OF 29.49. FURTHERMORE; APCH HAD PREVIOUSLY RPTED AN ALTIMETER SETTING OF 29.59. ONCE WE REACHED 2300 FT; WE HAD NUMEROUS BIRD STRIKES; WERE SWITCHED TO TWR CTL; WHICH ISSUED US AN ALT ALERT WITH AN ALTIMETER SETTING OF 29.49; ANTISKID LIGHTS WERE ILLUMINATED; AND THE STICK PULLER ACTIVATED. I TOLD THE CAPT WE WERE 300 FT BELOW THE 2300 FT MIN ALT; HE ACKNOWLEDGED MY STATEMENT; AND I FINISHED CHKING THE ITEMS ON THE CHKLIST ADDRESSING THE ANTISKID AND STICK PULLER. AT THIS TIME; THE CAPT TOOK OVER VISUALLY AND LANDED. ONCE WE EXITED THE PLANE; WE SAW NUMEROUS BLOOD SPOTS ON THE L SIDE OF THE FUSELAGE AND GEAR; HOWEVER; THERE WAS NO DAMAGE TO THE AIRPLANE. I FEEL THAT THE BEST WAY TO AVOID THIS SIT; WOULD HAVE BEEN TO EXECUTE A MISSED APCH; RATHER THAN TRYING TO COMPLETE CHKLISTS; HANDLE BIRD STRIKES; AND TALK TO ATC.