Thanks for playing and I'm so glad you enjoyed the puzzles! I'll definitely look into the Sword Practice bug you mentioned—that sounds like a pain and definitely not working as intended.
For the final puzzle: guvf vf terng srrqonpx! Guvf chmmyr tbg rnfvre jura V nqncgrq vg sbe bayvar fvapr vg jnf zber bs n phyzvangvat rirag jura fbyiref unq gb syvc guebhtu nyy bs gurve cerivbhf cncre chmmyrf gb svaq gur arrqrq nafjref naq gura hfr gur bevtvany pelgbdhvc gb znahnyyl qrpbqr gur ohggbaf... ohg jura V pbqrq gur chmmyr vg sryg yvxr V arrqrq gb cebivqr gubfr qverpgyl ba gur fperra fb gurer'f ab "frnepu" srryvat. Naq lrf, lbh'er nofbyhgryl evtug nobhg gur svir-yrggre nafjref orvat gur fnzr yrggref! V'z tbvat gb oenvafgbez ba na bayvar-fcrpvsvp jnl gb vapbecbengr gurfr naq ubcrshyyl znxr gur ynfg chmmyr n ovg zber qvssvphyg naq srry n ovg zber pbzcyrgr. Gunaxf ntnva sbe gur srrqonpx! :)