Finally cleared the normal campaign, but man the advanced campaign is a real bitch! Really gotta use terrain and tactics, otherwise, you're toast! I'm getting my ass kicked, badly, even with the strategy guide.
BTW off-topic, anyone enjoy R-Type Tactics/Command on PSP? It's a great game, although it doesn't use ZOC (zone of control) like Nectaris series.
There was also a follow-up in Japan only, called R-Type Tactics II: Operation Bitter Chocolate (weird subtitle, no?), great games.