These are mostly game settings, not tactics for defeating the enemy
I feel like soldier. "I'm surrounded by MAGGOTS!"

build my base with vertical shafts that go all the way to the bottom of the map at the entrance, so the the oncoming AI always falls into hell without ever getting into my base.

My favourite trick is to jetpack over enemies, land, and blow the back of their heads off. This works particularly well with the Darklones.

If I'm playing with my Brother, we play chicken with the toughest soldiers we have. Think two MPAMs flying at each other so fast that the actor is no longer visible. It's pretty awesome.

Creating mini-bunkers out of a corridor end module and a concrete barrier. Stick a Dreadnought inside it and watch it mow down endless tides of enemies. 'Death' difficulty is good for this. After half an hour they've usually managed to bury themselves under dropship wreckage and red paste.

Probably the greatest downfall of my units is the AI consistently shoots the weapon out of my clones' hands. Falling back on a digger and puree-ing their face in retribution is pretty fun.

Using the MP3, I setup an infinite income ( Gold Mines ) , and send in guards when some walls don't hold true, and start disemboweling/eviscerating enemies outside of the base.
It includes decapitation, destroying flying Head Trophies, wing clipping, disemboweling the Dropships, Ram/Eviscerate combo... ecetera.

Seeing how many clones or whatever i can kill with a rocket. Stuff ground forces!

Highest score is around 20, but I got lucky.

(-.-')''

20! Pah, 25 minimum, when I am willing to do it.

Yeah..

I lose interest and divebomb at 200 kmp

If rockets didn't gib, you could definitely kill 50 at once.

1. Use a drop ship, and *slowly* move across landscape, mulching skeletons wherever they dare tread (works really well accompanied with Genghis Tron music)

2. Mech fights. With a friend, spawn one of the giant soldiers found in most packs (Oppressor worked really well until we found the AAL mech...). Equip with a multitude of weapons, as most tend to break when fired at each other, along with the appropriate amount of anti-matter. Enjoy the ensuing carnage. On a side note, if your both on the same team, you can kill the occasional pedestrian

3. Burnt Chicken. Also needs a friend, and similar to the chicken mentioned above. Find a big empty map (trading center works pretty well), and spawn a Darklone with the hidden Darklone flamethrower. Use jetpack (flicker method gets you moving real fast). As the napalm take a long time to make fire, you'll probably not end up getting hurt until a constant stream hits you for a while (1-2secs). Gets very fun/hard when moving at crazy speeds....

4. Lots of pilot explosives in a drop rocket. It takes two to kill a giant clone...

5. Playing unmodded and "unactivitied" on death mode on prom grounds. Quite fun actually, the shotguns a surprisingly powerful weapon...

and my record for a rocket kill was about 60... mostly heavies.... and im kind of afraid to try more as it'll fry my monitor

Please use the edit button.

The Cannonball is FUN!!!
It's like that one drone, it missed a many, yet was still in the grind, it finally expired after the fanciful-footed foe lay impaled.

Build a giant base to the point where I just get some smoothly FPS (I start with 90 FPS on 1680x1050)
Then, I'll just defend my self.
It's getting wayyyy too easy, so I'm trying to figure out a way to make it really hard.

1. get mods: Klone-soccer and unitec.
2. use activities from unitec: Hard.
3. start level grasslands.
4. place sections on the map.
5. should when don look something like this:
6. get the invisible brain that is in the klone-soccer pack and place it in the empty dark space.
7. start the game.
8. wait for enough enemies to clog up the area aruond the brain.
9. send the cannonball-rocket flying towards the right to gain momentum.
10. lastly when the said cannonball has enough speed then fly down towards your invisible brain to use said rocket as a huge bowlingball to strike down on the unhappy enemies resulting in.....
well you have to figure out that one for yourselves.

Hint: you will probably look like this: that is how i react when i see it happen.

I like to take one guy whit a chainsaw (or something like that) and kill everybody whit that or i take pistols and start my commando surviving against bot (witch never look back..).