If anyone needs a overly useless pre-pre-pre-alpha entity guide, Here it is:
(Red Skull Guy) Jimmy - Acts like Rush. No tips cuz Doors is trial and error. If you know how Rush acts, you can pass Jimmy.
(Red Ball) Catalyst - Acts like Ambush. Does no damage. (I think?)
(Green Guy With Eye For Mouth) Patience - Acts like Chainsmoker. Don't rush, he's slow.
(Red Girl) Samantha - Design based off of that smiling guy from Grace, Will yeet killbricks at you.
(Rush-Looking Red Guy) ARMAGGEDON - Acts like Ambush. Rebounds.
Filth - Rare entity. I saw only 2 people died to it so far.
(Floating Computer) Xenon - Will continuously wander until she sees you. RUN.
(Blue Hand) Rapture - Will slow down player to take them.
(Looks a little similar to Filth) Speeder - Very fast guy. If he spawns early, GGs.
I think that's all the entities so far, More soon.