Sweat and Aldehyde is the second stage in Sub-chapter 26, Sea Polluter.
Start off by killing the first One Horn for money. Metal One Horn has very short range. Swarm him with Space and Rope Jump until they finally get a crit. Do the same thing to the other Metal One Horns. The Cyberhorns should be easy as long as you have a strong Macho Legs and strong anti-alien treasures.
Full alien treasures will make this stage easier.
Kill the One Horn by sending Island Cat and Crazed Walls. Metal One Horn will come out and use Hurricat. It takes about two critical hits to kill. When the Cyberhorns come, use all your cats. And continue to use all of them. Awakened Bahamut takes them out in a few hits. Continue to use Hurricats because the Metal One Horns will keep spawning.