Glad you enjoyed it, we tried real hard to make it feel polished enough even if its a bit slapdash! Sometimes to be happy in life you need the thrill of risking your organs on meaningless things, maybe its just a common thing in this world, its a bit of an absurd world in general.
There is a how to play page on the bug select screen, but yeah I get that it can be a lot. Though we'd have to rework how we handle the body parts a little bit if we wanted to have the player start off with only a few rather than their whole body at their disposal, hopefully only 5 being shown at once helps makes things easier to make sense though. A fast forward option would be really cool yeah, will have to look into how to do that, and maybe something to do on the side like some buttons that you can press or something maybe, not sure. But at the least we want to keep away from direct involvement, since the purpose is to be risking your parts on something you don't have much control over, and the three of us devs all like watching AIs fight each other. A 5 minute battle though is wew, we never had one go that long in testing, hope your bug won.
(Also according to Hollow Knight lore Hornet is at least part spider and is considered a bug so spiders are bugs :p)