Hi I need Help on Verminion

[Myon88]

The simplest way to win is to spam nothing but poppet type minions with 4 speed, high cost and high ATK. Speed is important for reacting to aoes and megaflare towers, and high ATK lets you dps him down quickly. High cost minions are preferable to swarms of low cost ones, because he has some nasty aoe autoattacks and you don't want to give him too much value off those.

So the wind-up gentlemen which you used fits the bill perfectly well, so do similar minions like the wind-up bartz/hauchefant/cid, etc.

It's possible to win by simply zerging him down with these. Just 8 of the same minions, no combos or strategy needed, just pure damage and keeping them in range as much as possible.

Healing is not actually a big issue. Louisouxs are decent in theory, but managing their limit break requires attention and they don't do as much dps as pure attackers. Just let any minions that die get naturally replaced by new ones from your gate. As long as you don't step in any aoes, it will keep up with the normal rate of attrition.

You don't have to care much about the twintanias either. You don't lose unless all your crystals are destroyed, so it's perfectly fine to ignore them and sacrifice the side crystals. Focusing on bahamut is easier and will let you spare more attention for reacting to mechanics.