Well... I have to say, after playing a few patrols with a Type IX in the Indian Ocean, I'm hooked! I don't think I'll be going back to SH3 now.
I really like how the AI can detect you and actually evade. I've also noticed that the evasive maneuvers are not random. The AI merchie capn's react to your pursuit angle and turn away. If you try to turn inside their radius they reverse direction... not bad!
Also I really like the progressive missions. After you complete an objective, if you send a patrol update, they'll give you another objective. That was a pleasant surprise.
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