Haven't yet downloaded this game/tried it out. Came across a YouTube video of someone playing it. Mainly commenting that this game looks fun and is a cool idea for a game and is definitely on my radar on the next game I want to try out. I hope you consider publishing this game on the Nintendo Switch (or at the very least make it available in the home-brew scene if you can't afford their dev kits. Though you'd still have to own some version of the console to develop this game on it. :P )
I'll wait a bit to see where this goes. I'm definitely willing to pay for this one. I imagine you aren't yet at the stage of deciding what platforms this game would end up beyond PC. I have a PC, but this feels like a game better played on a console I would think.
But I can say this game has great potential to do well on a system like the Switch where I've seen a lot of other indie games like this show up.
First thing I did when I saw that YouTube video was check if it was on the eShop..But sadly it isn't so googled to find this site where it's found. In it's current state, the game feels like something worth around $6 to $10. Maybe I'm not the export on valuations like this and this may change when I actually get around to playing it, but if it showed up as digital only game on the Switch around that price range I will definitely want to get it.
Another game "Enter The Gungeon" which I've been playing a lot lately is currently priced around 5 to 7. Though when it first came out it was closer to $15 so that's where I'm getting my price guesses from. :P
Not sure if you plan on expanding on the game mechanics more, but an idea that came to mind is perhaps in the later half of the game you can introduce mechanics that involve the arms.
But then again this game is called LegBreaker...not ArmBreaker. :P
Maybe an idea as DLC to the game later if you decide to publish it on Switch/Other consoles. Something like you get one or two uses of super punch/push. Could add destructible walls/heavy objects you must move and with the right mechanics you can add even more complexity to your puzzles that add some more physics to your game mechanics.
If this game doesn't end up on Switch/Consoles I'll still consider buying it. Just that I'd really like to see it on Switch. Definitely keeping an eye on this one. :D