Whilst this movie still retains some of the horror elements, this is more a sci-fi dark comedy but that's definitely not a bad thing.
With the alternate dimensions thing being in place, as well as the image of another Tree stuck somewhere whilst our favourite sorority sister goes through the loop again, this movie does explore the "what if" angle, especially with Tree's interactions with her mother, Carter and Laurie.
The suicide montage had moments of comedy gold and, whilst the decision to go back to her own dimension at the end was predictable and a bit off, it would make more sense if Tree was like "there's another me trapped somewhere who will never live this life".
When the original came out, between that and It, my little brother chose the former and the sequel never really disappoints. Rothe deserves a lot of the credit here with her range of emotions from "I am so done with this" to "So happy I'm going to traumatise these idiots" all the way to absolute, unfiltered, borderline maniacal rage where you can almost see the aneurysm happen, someone put this lady in more movies please! This has cemented Happy Death Day as a feel-good horror icon of the 2010's. I would say that Rothe would be our reigning scream queen but, really, she's this generation's Sigourney Weaver.