FPS is Easy Mode since there’s Lyra:
By Easy Mode I mean it’s either going to be really hard or impossible - all depends on your skillset, dedication, resources, people you work with and the features you need. Since this is a new idea, you’re likely to run into unforeseen snags - that’s what access to source code is for.
If you have a ton of experience but are coming from another engine / field:
https://www.unrealengine.com/en-US/uses/switching-to-unreal-engine
It’s frustratingly fun, tbh. The best advice I can give:
- make a rough list of must-have features / systems (asymmetrical 4 player co-op vs cramming 256 people in an open world?)
- make a new thread in the proper place (off-topic is for weird ppl only):
- list the features and ask for advice / experience with handling tools that tackle them
- avoid antagonising and belittling people from the get-go; we have fragile egos
You should be able to get an answer more serious than mine.
Good luck!