WONDERFUL game, took me a bit to get the endings, but it was great! this is a bit of a spoiler but to anyone stuck here are how to get the endings though i dont know the numbers so im just listing them as random ones.
1. scissors in your desk, stab her
2. scissors, then interact with package, hit her with shelf
3. grab sharpener on desk, interact with umbrella, stab her
4. shelf on top left wall, crush her
5. interact with shelf on right back wall, hit her with door
6. interact with closet and grab deodorant, grab lighter in top right desk, light her on fire
7. wake up and weird things happen, go to office, choke her
8. go to work once more, and let the story play out! true ending.
LOVED the game, it was so good so good job. those are the endings for anyone stuck like i was, wish i had a little help haha. have fun and enjoy the game, it really is great! ;)