This is a solid module with a great premise and a tough choice at the end.
Here are some questions/suggestions/feedback:
- The use of the term "Trojans" on the first page was confusing, since there was no explanation then for how they were trojans or what effect them spreading in the system would have.
- I legitimately laughed at the idea of using a torn-off titan's fingernail as a sled and pictured sliding down a snowy hill before I got the intent. Not saying you should change it though. I thought it was imaginative.
- What benefit would affixing the antigrav ring to the Orpheus provide? The way it's described, it sounds like it only affects itself.
- It took me a moment to realize that the second page is a map, and I may have missed something, but I'm unclear on whether the image of the titan is part or apart of the map.
- I would also like a diagram of the core. Does being 'high' in this context, i.e. at the zenith of the temple mean close to the center of the core? Is the temple floating in the center of the core? It seems to operate like being at a high elevation on earth where air is thinner, but I am having trouble grasping how it works.
- The comparative scales of the locations and different titans are also unclear to me. Can all titan enter the temple? Are all "lesser titans" just several times human height and all "titans" of "impossible scale?" Does several times human height mean 3x or more like 100x? Unless it's intended to vary greatly, i might suggest just choosing a specific number.
- The king being a "lesser" giant also didn't seem intuitive. I immediately assumed the lesser was not the king and that the king would be one of the greater titans. That's more just my preconceived notions though. Maybe you could make it explicit that the greater titans/giants were servants or something, or just more information about the hierarchy.
It would be fun to know what the titans do after they are freed. Would they help the PCs? Would they escape the planet? Are they dangerous?
Fun, evocative ideas. I appreciate the tables and statted ship. My brain just had trouble with the spatial aspects. Good job!