Camera is very important for 3d platformer. And I was so infuriated by what you did, I decided to perform a vivisection on your project. What I saw told me everything I needed to know.
Here is the link to a slightly more optimized version of your work. I hope you can implement the rest of the fixes yourself.
I tried to play again and found an issue. When you click on a button while looking directly at the keypad, game reopens the keypad UI and resets progress. Going or looking away solves the issue.
There are many things to like about this, and previous comments already did a good job of describing it.
Here are a few things that need work:
Enemies are non-threatening. They are simply too slow.
Timer is a double-edged sword. It is supposed to rush players, making them take snap decisions and induce tension. But on such a big map it mostly brings frustration.
It is also hard to find the right amount of time to give per stage. Having enemies patrol certain routes would make it easier to determine.
I will assume there being three pillars and two leylines as intentional. I guessed correctly and found the third pillar on the first try. :D
The UV light mechanic is a cool idea and implemented perfectly. But it makes lantern useless. If it had longer light and there were obstacles that required you to see them from further away in order to avoid them, it would make it relevant. Adding a little bit of time to switch and stamina cost would help too.
Presentation is nice. Sound is good and so is art.
Personally, I dislike to constantly move my attention between combat and clone creation. If it was your intention, then you did a fine job. If I were in your place, I would cut matter drops 1/4 and use the tank to store 4 clones. This would also solve wasting picked matter when the tank is full.
I liked discovering what different genes do. It is a shame that there are only 3 of them right now. Perhaps some rare ones like regen, attack speed or range would make it more interesting. And maybe an option to inject yourself for a temporary boost.
Harder difficulty is a must for this one. Earlier and more frequent attacks. The max number of workers tied to the number of houses. Make player make strategic choices, not spam bread on the first two days.
I personally do not like randomness in getting seeds. It would be better if the price for each was set (it can scale, depending on various factors), or at least an ability to keep seeds so as not to plant them immediately. Cause being, that right now there is little point in removing plants.
If you plan on working on this game after the jam, I would suggest adding more interactions between plants and between plants and enviroment. Something that would not be immediately apparent, require experimentation and interesting to discover. Loop Hero is a great example.
Also, cactus is bad. That makes me sad. Change it and make it viable. =)
