First of all, you need to be an engineer. Make some Saronite bombs, and then you'll try throw them on a gate in SOTA, the Gate will take damage, AND if you wanna do the achievement (5 in 1 battle) or 100 seaforium total then its very easy and fast as an engineer, those bombs also deal damage to the walls.
I tried engineer premade with theese bombs and when we defended we all spammed the wall with bombs in SOTA and broke through the final wall which gave us the achievement (Defend SOTA without loosing any wall!) which is a pretty hard one, and yes, this should still work.. Thanks
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