nah i got it finally. my bro was away so couldnt play for a while. i also understood what i was doing wrong. it turned out to be extremely simple.
the reason we were low on ammo was the same reason i couldnt finish the game. all the bosses had some special ways to be killed, not knowing what exactly those were made us waste ammo like candy.
what we did wrong here was, we had 2 players, i never played solo. so in the middle of the lava pits is a high ground and the lower ground. well we ran around in circles hi ground low ground, thus running in clocwise circles. everyting seemed normal becuz blood and guts were flying out of wesker when we shot him. we were even able to stun him, if enough shots where made. while making circles like that, wesker never gets hurt, and he only swings away, its swing swing swing swing. and because of that swinging i was afraid to stay in that small circle on the high ground, wich was the only place he could actually be harmed and where he whould actually stop swinging for no apparent reason, and whould actually show us the magic orange ball.
we just tought if we ran in circles we could kill him more efficiently just like we did in the hangar. if i had played solo i whould have immidieatly stayed on the high ground cause there was more room there.
so in conclusion.
wesker can only be harmed while he is standing in the middle platform on the high grounds in that circle area, with hes orange ball of magic and wonder exsposed. And only way to inflict dmg is to eighter shoot him into this orange ball or wait until he for some reason throws hes hand in the air and waits for you to grab him.
thx u all ... especially the guy who posted the rick roll video. i made it harder than it actually was:wacko: