Not sure if I wanna go back and polish the player sprite. I learned animating while making the game so I think I might not even be able to make it that much better. You're not the first one who mentions this.
I think the input lag you mean happens when you turn around. It also came up last time I posted the game in a DD. I need to have some input lag in this case to allow the player to turn around without walking. I did make the lag less actually, but I don't want to go too low to avoid missinputs if someone holds the button just slightly longer and walks off a cliff. So this is indeed intentional.
Placing ice while walking actually is a great idea, this might be reasonably easy to implement. I'll look into it.
Some form of undo was heavily requested last time, I couldn't really make it work with a step-wise undo so I compromised. Glad it does indeed come in handy.
There's a lot of areas in the game that I'm not 100% happy with but I'm also a bit burned out on the project by now and I'd rather just let it rip and make my next game better. My "abandon and make new game" finger has been itching for months.
Thanks for playing!