Are there any tips to defeat him, I've been using Advanced power armor mark II with a bozar and I feel I could take him alone but I always end up being killed by the turrets, is there any way to shutdown the turrets at all or should I focus on them first then go after horrigan?

http://user.tninet.se/~jyg699a/fallout2.html#enclave

It's a little too much to sit here and type out when it's already in all walkthroughs