I don't see any sonic pictures in the portal much.
Okay, now something relevant. I find all the characters and objects to be incredibly plastic-like. The weapons, like Pico's knife, don't look very dangerous, unlike how you made the straw that killed Wendy in one of your earlier works.
The reflection off the ground is nice but it feels like it assumed the people are in a brightly lit room. I don't get that from the rest of the background. If the room was brightly lit or those reflections were instead shadows, I'd find it more believable.
And... that's about it. I don't think I have anything else to say about this picture.
Oh right, you forgot about the OW cringe. Also, fuck MLP.