Holy crap that animation was buttery smooth all throughout! I'm a sucker for all those extra wavy bits, really appreciate your attention to detail on every single sprite. And the lemming itself was very charming. The fact you used your OWN game engine too is jaw-dropping, seems really powerful and your passion for it is palpable! Great entry all throughout, I just wish there was a bit more to the freezing -- the main gimmick was waiting for a bridge to raise or gate to lower which got a bit same-y. But with this groundwork, there's a ton of different platforming possibilities.
And just for my own sake.. was that last flag in the sky reachable?? Felt like you were teasing us with that D: