I need help anons. I'm looking for a hentai I saw, maybe

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I need help anons. I'm looking for a hentai I saw, maybe 10-15 years ago. Here's what I remember of it:

- All female cast
- On a spaceship/ sci-fi setting
- Won the pink pineapple award
- Green tentacle alien creature disguises itself as a olive green-haired woman, who is rescued from a space pod (or something)
- There's a lemming pet (named: einstein or something similar) It saves the heroin at the end
- Main heroin has dark purple hair, and a white jacket, red undershirt
- There's some kind of kryptonite involved in the plot. The heroine uses it to kill the tentacle monster. It glows radioactive green. I think it was called something like "metrogria".
- It was probably from the 90's.

I've never seen it mentioned anywhere else. It was on TV when I was in my early teens.