How do you beat the last boss in Bioshock?

you know you should havent named the thread this because its a sopiler you should have put bioshock help (spoilers)

Buy the complete stock of grenades, they're like 20 in total including proximity, heat seaking and frag. Buy as much exploding bucks as you can.

When the battle starts keep moving around and shooting him with the grenades until his health runs out and he goes to recharge his ADAM. When he does, go up to him and stick the siringe like you did at the beggining of the battle.

It really isn't hard at all. I did it on my first try on both Normal and Hard... so there must be something you're doing wrong, because lots of people in this forum have also beaten him in their first try.

I just shot him to hell with steel tip bolts. I constanstly strafed, keeping a good distance from him. He always misses with his projectiles and charges. Basically, just focus on dodging his projectiles and when he charges at you, turn around right when he passes you, line up a shot, fire, and keep moving. Don't bother with plasmids, as they're absolutely useless, and don't mess with other weapons, either. Bolts are all you need.

When he calls out the bots, just keep running around shooting Fontaine. They'll go away after 60 seconds. During his last phase, the splicers he calls out can be a little annoying, but you can ignore the thugs by strafing. Kill the leadheads the quickest way you can, and then focus back on Fontaine.

Yo the last BOSS is so freaking easy=, justfollow these simple tips (make sure these skills are at max):

-Wrench damage

-Move speed/attack rate speed

-Electrical Discharge

-Tough skin

-Life leech

P.s. Just stand your ground with him, dodge his charges and rush right back in swinging like a mad man, u will surley OWNAGE his ass... :P

Shotgun and a couple grenades....

bolts and telekenisis. when he shoots stuff fire it back at him, also throw barrels at him.

when you get a shot, the crossbow is your best friend.

On normal the colour of his skin depends what kinda' damage and how much damage will hurt him the most.

For example; If hes fire you freeze him.

If anything I had almost all the weapons upgraded and all I needed to use was the buck. Thats all. Nothing more, nothing less. Normal bullets. It just full out tools him.

I didn't get hit once on Easy or normal. I have yet to try hard. Either or, keep jumping/crouching. He should be a sinch after that.

What I did was completely unload my chemical thrower at him, and then pelt him with shotgun shells.