Big news gamers!!!!!!!!! (but also short post)
After reviewing Microsoft's documentation, I've discovered that I can include the problem DLL in the game's files without any issues. In other words, the game now works on Steam Deck and Linux without any tweaks required!
I pushed the update this morning and have had two Steam Deck users confirm that it is working.
If you have any issues, don't hesitate to let me know through the Discord (https://slashslash.games/discord) or Steam discussion board.
Thanks Steam Deck-ers for your patience :)
P.S. I'm in the middle of a small update that will be adding a special extra achievement... no promises when it'll be out but keep an eye on it!