Anyone got any tips on this one, done everything else, just need this for the achievement. I can get to the final waves but always get swamped. :o
3 star tower defence solo
It took me multiple tries, it becomes easier once you have at least medium turret and two mines. I use the mines at the top of the stairs on both sides to keep them from hitting the console. The turret I usually place up high on one of the side panels and use it as a meat shield. Keep in mind your turret can take damage for you, just use it to cover one side and clear the other.
just use mines to cover the back hall behind you, and camp the hallways. its not that hard.
Just use a heavy and a LMG. I didn’t even have to use a turret or mines or anything, it was easy enough like that.
I didn’t struggle on this one, I generally had one mine down but nobody ever tripped it before getting all shot up. Just watch for the lights and act accordingly.
After doing it again on a second character I did find myself dropping the mine at the control point just in case I got ganked and needed to run back to prevent them from taking it.
Place a mine in front of the CP, check for lights and spray down corridors at head level when the enemy spawns. Also note that there are 2 exits from your spawn, hall to the left takes longer to get out of, path to the right gives you quicker access/view of the CP.
Didn’t find it that difficult, sure the last two waves get a bit frantic.
I played as a medium engineer with the light turret perk and an under slung grenade launcher. Placed the light turret on one of those side platforms and aimed it at the central tower. As soon as I’d know from which direction they would come I’d place a mine in their path. When multiple waves started to arrive simultaneously, I’d place the mine in one of the wave’s path and focus on the other one.
Good use of the under slung grenade launcher (or the grenade shooting perk) makes eliminating a single wave much easier. Also make sure you reload and restock both your weapons in between waves. And during a fire fight it’s usually much faster to switch to an smg if your assault rifle is out of ammo. The waves don’t arrive at exactly the same time, so if you keep an eye on all the approaches you can try to intercept & eliminate the first one before the second has arrived.
If you need help this is the Brink Wiki’s guide. If you use a grenade launcher and place a mine in front of the command post, it should be easier.
I placed a turret looking towards the middle of the two doors that are behind the CP, and I placed a mine at the bottom of the stairs to the right of the CP (if facing the CP)… Just keep replenishing ammo after each wave, and restocking the mine (even at the top of the stairs if you don’t have time to run down).
Well your in good company chap, lol.
Tried all the different mine placements, heavy with mini gun and still get swamped. Still its nice to have a challenge although nothing will beat Mile High Club on Veteran. 
Thanks for the tips though guys. 
It’s much easier with a low level character.
Try to clear the spawn waves before they get into the main room.
Watch for the light, line up your shot, and try to headshot all of them as quickly as possible.
Use up all the ammo in both guns, use the comm station to re-up on ammo.
Always focus on putting bullets into one baddie at a time.
Done it, killed them in the spawns as much as possible with the heavy and LMG. Not to bad in the end. Cheers for the tips. 
LOL did it first time with no hassle at all, bang bang pew pew all done. just set a turret up and a mine between rounds. nothing creative.
Set up turrets and mines, start it. Try to throw a nade and kill them while they’re in the corridors. When multiple waves come, kill the waves very fast and in the corridors, they come with a delay and try to know where they come first(try listening to footsteps). If you die, try to throw a nade and kill them at the cp while your at the spawn doorway.
I was unseccesuf in this mission.
I set up turrent, mines. When it was 5 minutes left, i started. And anyway i lost…
;p
for me, impossible:)
[QUOTE=xTriXxy;312225]I was unseccesuf in this mission.
I set up turrent, mines. When it was 5 minutes left, i started. And anyway i lost…
;p
for me, impossible:)[/QUOTE]
What do you mean? You waited until there were 5 minutes left before capturing the command post?
[QUOTE=xTriXxy;312237]yes:)
there is nothing in instructions you have to start it immediately[/QUOTE]
Yeah well I’m quite certain the countdown timer is not the goal but rather the limit. The goal is to defeat all the waves within the time allotted. (You get scored based partially on how much time you have left.)
It’s true you don’t have to start immediately, but it would be smart to start as soon as possible. You’ve been making it unnecessarily hard for yourself.
The best thing you can do, is actively listen for the footsteps so that your timing is perfect.
Once you have that down, you can Lobster GL or Dragnov your way through most of it, switching to SMG to finish…
Also the Turrets main purpose isnt to get you any kills. Its not even there to do any damage.
It simply draws the attention of the bots allowing you the opportunity to do your thing.
Keep an eye on your ammo count, and make sure you restock at the CP.
Also dont bother upgrading the CP for extra health, as it takes too long.
Try to avoid fighting on the bottom level also.
The rest is aim.