Overall a pretty good game. I played the v1.1 and now tried the v1.2.
The door opening puzzles are simple and can be done fast after getting the first one right. As I understand they're a secondary mechanic so it's fine. Maybe they could be more complicated in further levels. Take this with a pinch of salt as I don't usually play puzzle games.
The main mechanic of freezing enemies is interesting and can produce interesting levels. I like the introduction of the "freezing alien" in the part where there are two pressure pads to open a door. But I haven't been able to complete it since there's only one enemy and can't find any rocks. Perhaps having died one time has something to do with it.
The first time encountering the "freezing alien" I was a bit afraid to get close to it, maybe something can be done to make it more friendly/understand what it does other than the green color on the area. In the same level, when opening the door to acces the second "freezing alien" I feel some audio or visual (or both) could be used to make it clear that a door has been opened.
The graphics are clean and the voiceover helps guiding the player. At the first corridor there's some audio overlapping when interacting whith the door, I'm not sure if it happens always or it depends. As a suggestion in case you keep working on it I would advise you to add subtitles to make the game more accessible.