So, if you're a beginner at Dune2k, you can try copying this build as practice vs the AI.
Blitzkrieg: Harkonnen vs Omnius/Vidius/Gladius AI
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Build Overview:
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The AI is not exactly as good as players and is predictable. Therefore, this build is recommended against the AI (and maybe against newbie players) as a practice tool. The goal is to benchmark yourself and see how much you can improve with micro/macro play (micro: unit control / macro: unit/base building).
The build revolves around rushing for a Heavy Factory and getting 3 harvesters mining at 1 refinery. Once you have a barracks, you will rush towards getting infantry and an outpost. Once that is obtained, you will halt all infantry production and go straight into missile troopers.
You will have very low money throughout (which is a good thing: unspent money is wasted money) once you start producing tanks. This build basically works well due to the power of combat tanks vs trikes, grenadiers/infantry and quads. The rocket troopers are for support against any tanks that are thrown your way.
Build Order:
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windtrap
refinery
heavy factory
@heavy factory 100%: queue combat tanks (should be around 1:40)
refinery (sell when finished)
refinery (sell when finished)
windtrap
barracks
@barracks 100%: queue infantry
outpost
@outpost 100%: queue rocket troopers
windtrap
***situational from here on out
starport/hightech factory/light veh. factory etc.
Build Order - Building list:
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Heavy Factory
Barracks
Outpost
Starport
Refinery x 3
Windtrap x 3
Strategy:
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1. Early Game:
Do not build any concrete
Expect a trike + infantry/grenadier rush (this is why heavy factory is built before 2nd refinery)
Your few, early tanks should be able to easily handle the rush. Remember to squish tightly grouped infantry (call a harvester to squish if necessary -- although it shouldn't be)
2. End Game:
Build up as much infantry + tanks as possible. Once the outpost finishes, only build rocket troopers + tanks ("blitzkrieg" units)
Start a counter-attack once rocket troopers start
Win game
Beginner Tips:
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1.)Never stop building -- you're only putting yourself behind.
2.)Always spend your money as much as possible -- floating money is wasted money.
3.)Always have enough power -- low power means points 1+2 are not being fulfilled.
4.)Move back or completely remove low health tanks (unless it is safe from dying) from combat -- saving a unit and repairing > building a new one.
5.)Split your infantry -- less grouping = less squishing.
Hopefully this attracts a few folks to Dune2k and we can play some games together

Edit: added some general rts newbie tips + fixed typos
Edit2: fixed the build order + fixed a typo