i don't like looking for my warlords cd.. heh
seriously just play to your leaders strengths. the reason you 'should' of built the great wall is because it has a good synergy with the imperialistic trait not for barbs.. units are better at that and you don't need archers really.. you should be killing them with a more aggressive unit so they don't get to pillage your land, but archers would be ok if you were gonna beeline to horseback riding but trying to take cities with just keshik is a bad idea, keshik pillage, harass, steal workers, grab any settlers etc. etc. let your aeman take cities, and when you get swords transition those in with a few shock aeman.
making your capital a gp farm is a no no, unless you move your capital to another location down the line.. your just throwing away a plus fifty percent commerce and hammer bonus.. makes no sense at all.
triple your units and double your cities and your good to go lol... and specialize your cities more.
... ok i grabbed my warlords cd again but i'm very upset about it
i took a look at the shaka game and as a shaka player myself i'm very upset with you lol
once again your building the pyramids and without stone, your also building the temple of artemis.. your playing shaka.. you need to switch to a industrious leader and i think you'll do much better, you'll be able to play the style you seem to enjoy and you'll be getting an etra something like 600 more hammers for your start that is a lot of units,settlers,workers.
unlike the mongols you don't get to slide on the archery.. i see no reason for you to nab archery as shaka, none.
you should of grabbed copper before iron, meaning, there is a copper source near your location and you didn't grab it and instead wen't straight to iron working.. makes no sense, granted the copper is in a horrible location but sometimes you drop cities just to grab the resource, the only reason i'd grab iron working before i had a copper source hooked up is if there were jungles around my capital or i had no copper in the area..
you have no cottages going at all and again your capital is farmed up the wazoo

you have absolutely no cottages at all, not even a city that would be capable of really running any, how do you epect to keep your economy going and your tech rate up..
again.. you have absolutely no units.. you should have like 6 times that many lol you could afford them if you put down some cottages
you have barracks in every city again, it's ok bc of zulu ub but i don't think you quite need them in every city right now with such a small size, you also have barracks in every city but your not even utilizing them by producing units.. what is the point of building them if your not gonna pump out units.. just wasting hammers you could of put to something more useful.
there is a gold by your location that you haven't tapped at all.. one gold mine produces as much gold as your palace.. thats eight free gold coins, in the early stages of the game that is huuuuuuge, that can half your research time, with the added fact you have no cottages i can see why your economy is crashing lol
i think you should play as inca and leave your workers to auto
you need to build more cities, if your research isn't under 60 percent in the early game you can afford another.. well thats how i do it, i won't go under 60
you need to build massively more units.. like waaaaaaaaaay waaaaaaaay more units, this will keep the computer from attacking you and.. you just need that many more anyway.
your not cottaging your tiles... your not gonna be able to support research, cities, or units without commerce.
your not using the terrain well, if you see a gold mine.. grab it
do a little research into your leaders.. if your playing an aggressive, epansive leader do some looking in the pedia and think about how to best leverage those traits.. that is your edge over the other ais, use it well.
don't build wonders you don't need, unless it fits into your strategy for winning and try not to build them if you don't have the strategic resource available or are industrious.
stop farming your capital unless your going to move it or replace the farms with cottages once you hit your happy cap.
build more workers.. atleast twice as many, you can even stack them and make them one unit to double or triple there work times.
if i'm playing shaka i've usually killed someone by now

lol
don't take offense to anyone of my posting, i'm just kinda like that hehe
i do think inca would be a good leader for you, he's industrious so you can keep building your wonders and it'll be ok and he's financial so it'll help your economy.. also i'm not sure if the workers cottage spam in warlords (they do in bts) but if they do just leave them on auto for awhile.
if you want to keep using archers (which i highly recommend against) at least use qin shi huan or what not, hes protective so atleast they will get some free promotions and he's industrious so your saving 50 percent more hammers to spend on workers, settlers, military instead of just wasting it.
i also think you should stop building a bunch of wonders..
but i love you and sorry if i came off blunt.. also my keyboard is broke so that's why my post looks like i did it in crayola