Level 06: Dome of Light

After clearing the area, build a turret and then before doing anything else take
ten minutes or so to build your base up to full power with one reactor(
advanced), one vehicle depot, one field armory, the rest supply depots, and
don't forget to station a man in the reactor sitting behind the base! Don't
worry, nothing big'll attack you so you don't have to build any defense units
yet. Build another turret if you want, and you've got your Spartans. Get fully
upgraded warthogs and some tanks, cobras, wolverines made and put the Spartans
in the tanks. Use your field armory to increase population, turrets, etc, and
then destroy it when you're done to get another reactor so that you can get the
final upgrades to your vehicles. Once this is done, destroy the reactor for a
supply depot. Take your time in this base setup, you'll thank me later...

Once you finally get everything done, then order your first rhino. Before you
do, make sure you have your Spartans in tanks and a sizeable army. Mostly
warthogs and tanks, but a few cobras and wolverines in there for good measure,
and with everything upgraded. You should feel like a badass(Hint: You are.) Make
sure your turrets are all up and upgraded too, because after you order this
rhino, the Covenant are steadily going to try to ram things into your base's
rectum at an accelerating rate throughout the level. I'm not going to go into
specifics here, now that you have an army, I assume you're fully capable of
reinforcing, creating new armies, and watching your base. The goal is to get
rhinos where they are asked for and to protect the ones that are already in
place. I can tell you the two farthest to your left will almost never get
attacked, so leaving men there is just a waste of time. The big places to
fortify is the rhino right above your base(first rhino placement) and the one
right beside it to the right when you finally take that area(fourth rhino
placement). Don't fret if you lose a rhino - it happens a lot. You can't replace
the rhino tank in that spot though till you put one in the spot it asks for -
then it'll give you a chance to replace those rhinos lost. I found that the best
protection for the rhinos that I said get attacked were either three tanks or
one tank and four warthogs. Make sure to watch these rhinos often to check their
health - getting another one up there is a real pain. The healing function is
your best friend!

Anyway, this mission shouldn't be too much more than a little base management
while in crisis. You may even lose a few buildings to the locusts that come -
but the tank Y feature wreaks hell on them, and if you can, maybe grab one with
a Spartan to use in your conquests. Good luck. This shouldn't be overly
difficult.