The game is available on Steam here: https://store.steampowered.com/app/1414530/Kavel/
The Steam version has Leaderboards and Achievements integrated with the Steam backend.
On Steam it's also available on OSX/Mac.
I think it may have been user error actually. I m,ay have search Kaval instead of Kavel. As tempting as it is to say yes to a Steam key, I'd feel bad about it so I'll buy it later in the month.
I'll also be covering the game on a future podcast for Mental Health Gaming. Such a good concept that works wonderfully well.
Ok, if you change your mind let me know and please let me know when the podcast is out, I'd love to check it out. I'm easiest to reach on Twitter (https://twitter.com/JerryVerhoeven) or here should also work.