The animation is okay and it's obvious work went into this, but I honestly didn't enjoy it much (spoilers ahead):
- The movements in the animation feels robotic in some parts or I should say not fluid enough. I'm not sure why it feels that way though. I don't know if it is because they're not quick enough at times (like where the alien jumps up into the vents for the first time. It reminded me of CGI movements), or the movements too stiff (like her walking into the kitchen) or if it's because the speed at which the movement happens is too uniform; there's no jerky movements or drastic changes in speed in little moments. For example, take the main character putting on her boots; everything from her stepping out of the pod, to sitting down, to putting on her boots feels like the exact same speed when you could have had it where she sat back hard or, once the boot was on, she dropped her foot down to the floor.
- It's just the movie Alien, but in an anime style. Yes, I know the plot points and setting aren't the same yet when you're doing something that closely mirrors something else, you either need to take it in a different direction or do an even better job than the original, otherwise it comes across as just a bog standard homage when it could have been a lot more.
- I feel like portions of the animation could have been removed. At the part where the main character wakes up and says she hates Mondays, it could have cut to her in the kitchen. I could be completely off on this point, but it's also clear that moments like these aren't plot relevant and it wasn't interesting (the only thing you could say is it acted as build up for the interesting parts though there might have been better ways of doing this).
- The alien honestly wasn't that intimidating, which I think goes back to the movement thing I mentioned before. Maybe some more sound effects or different camera angles could have helped, where only parts of the alien are on the screen sometimes, building suspense.
- The voice acting and sound effects are probably the best part. They were very well done.
- I guess my last criticism is the plot, most of which is pretty good. Depressurizing parts of the ship is definitely the plan of action I would have taken if there were no security systems for dealing with intruders. Most of the actions taken make sense except for a few glaring ones: wouldn't the ai computer have a built-in security system for detecting unknown life forms or at the very least inform the crew if it detected some? As soon as she saw it enter the vents, you'd figure she'd immediately be wary of the one in her room. Do they not have weapons onboard? When jumping, how did she know she'd land on the driller and not float out into space?
Overall, it is a good effort, but it didn't make me feel much of anything except possible fear of a jumpscare (thank you for not doing that by the way. I think they're cheap). I wish you luck in your future projects.