I have to try that map sometime. Some thoughts from me: 12:30 You could have moved that lower Coilship into the AC Ore chamber. There was enough room, a target that needs permanent defense and they shoot through walls. And those projectiles only go for units. 17:00 I like to pre build and pre charge my Neutralizers. That minimizes the time creeper can destroy them. Plus I don't like waiting for the charging. 22:20 If you are worried about opening the shield, the portals AC transport function or collect/dump spray ships could help. 23:55 Cryons are probably the best shios for pushing in confined space. Especially if you also got AC pressure or a building shields behind it. Because they can directly stop the flow of creeper.