Happy Death Day 2017 Alternate Ending

The alternate ending of Christopher Landon's Blumhouse teenage slasher horror film Happy Death Day oversaw the continued killing spree of initial murderer John Tombes, an explanation of his background, his eventual escape, a Bayfield university massacre ending Tree Gelbman's birthday before the next day and the reveal of another killer accomplice in the loop as it breaks.

Deaths

 * 1) Officer Richard Santoro: Guarding officer Richard Santoro overseeing John Tombes restrained at the Bayfield university hospital is revealed as another accomplice, working primarily in conjunture with Tombes prior to Lori Spangler's devised plan to murder Tree Gelbman. He is betrayed upon releasing John Tombes from his restraints as had done in the original time loop he stabs him in the back, however also this time stabbing him numerous more times and slitting his throat.
 * 2) Nurse Helene Payton: After finishing her shift and saying goodbye to Deena she comes to have a quick cigarette in the belltower after changing from her uniform back into her clothes. She comes across Tombes in the belltower hiding the body of Officer Santoro. Helene then flees and comes across a ready to depart Dr. Gregory. Gregory as he tries to call the police is rendered unconscious by an attacking Tombes who pursues Helene back to the belltower and hangs her, then harvesting the remaining loose bell ropes.
 * 3) Nurse Deena Allcroft: Deena before going to check on Helene who has forgotten to come and collect her bag and keys sees the bloodied door to Tombes room and sees he has escaped. Realising her own keys are in the changing room lockers she instead takes Helene's keys and starts to slowly move toward the parking level. Tombes attacks and the scheduled night university blackout occurs in which Tombes seizes the corridor fire emergency axe. Deena makes it to the parking level and after careful manoevring from Tombes makes it to Helene's car just as Stephanie, Dr. Gregory's wife who had been parked waiting for her husband outside pulls in to the parking level. The distraction allows for Tombes to come to the driver's seat window and smash through with the fire axe lodging it in the side of Deena's neck.
 * 4) Dr. Gregory Butler: Dr. Gregory regaining unconsciousness reaches the parking level and comes across Stephanie being punched unconscious by Tombes. Gregory armed with Santoro's gun shoots at Tombes and lands a shot allowing for him to gather Stephanie, load her into her car and drive away. Tombes pursues in Helene's car with Deena's body in the backseat. On the highway out he catches them and crashes into Stephanie's car immobilising them and causing a petrol leakage. Still armed with the hospital fire axe he is able to pin a firing Gregory's arm to the vehicle. He then with a birthday candle taken from Lori's unconfiscated hospital belongings immolates him as Stephanie escapes the car and Gregory perishes in the explosion.
 * 5) Ryan Phan: Meanwhile as Bayfield university's Kappa sorority had been temporarily closed down to the death of Lori Spangler Nick Sims' fraternity still hosts Tree's surprise birthday party. Carter's roommate Ryan tries to pick up with blonde asian Kappa sister Tabitha Coleman and Kappa sister Becky Shepard. Becky needs to return to campus to collect her running attire as tomorrow is affectively the first day of her new exercise/diet regiment. Tabitha volunteers to go along with her and Ryan provides a ride directly back to campus as he had not drank. Ryan back in he and Carter's room collecting condoms and seeing a drawed X-Ray of Tree's sustained time loop murder injuries is surprised by the Baby costumed Tombes who smashes his head into and his body through his damaged bedside table Carter was earlier fixing.
 * 6) Becky Shepard: Following Ryan's death Elaine on foot reaches campus and Tombes armed with Carter's baseball bat from he and Ryan's dorm room in Williams Hall surprises Becky and Tabitha passing the tree where Tree in a previous loop had been killed and herself killed Becky. Becky is killed the same way as the previous birthday loop via smashed across the head with the baseball bat by Tombes, before the horrified screaming eyes of Tabitha.
 * 7) Tabitha Coleman: Tabitha flees and eventually at the university quad comes across Stephanie who escorts her to the university library with Gregory's keys to get in. There Tabitha charges her phone and calls the police, her call directed to Bayfield Sheriff Walton Lambert who previously had died via being run over in a previous Tree Gelbman loop. Elaine sees Helene's car left parked outside with no Tombes and makes a run to get the vehicle as Tabitha completes the call. However Tombes ascends on the library as the call ends. Tabitha runs out and makes to the underpass tunnel where Tree had died in her first loop. Tabitha outside in the tunnel in the spot where Tree had been stabbed and killed fights off the attacking killer Tombes who eventually overpowers and slashes her with the knife he had killed Santoro with left to him by Lori. After Tabitha's death Tombes places down the spinning garden gnome ceramic in the tunnel as had been done in the first loop.
 * 8) Tim Bauer: After Tombes recaptures Stephanie and in Helene's car with Deena's body he comes to the fraternity birthday party for Tree now ending. The remaining party-goers being Tree, Carter, Tim, Nick and Danielle. Tim is killed outside after urinating and seeing Tree heading into a room with Carter to have sex he is stabbed and his head bashed against the window ledge.
 * 9) Nick Sims: Upstairs in his pleasure dome room Nick is killed the same way Tree was murdered in the second time loop via being stabbed to death via his broken glass bong.
 * 10) Sheriff Walton Lambert: Arriving first at the fraternity seen as road blocks are created around Bayfield university to catch Tombes Lambert comes to the fraternity and is killed before Tree, Carter and Danielle as he is run over by Helene's car with Stephanie still his captive passenger, making his death the same as a previous loop.
 * 11) Danielle Bousman: Drowned in the outside fraternity fountain by Tombes after a brief struggle making her death the same as Tree's fifth loop outside the Butlers. Following her death Stephanie escapes and an injured Carter overseen by Stephanie Tree wards off Tombes after learning his background wards him off with Santoro's gun taken by Stephanie from Tombes which was used to injure Carter. The police then arrive along with Danielle's sorority sister friends, the other party-goers including the global warming petition student, darkly dressed student of earlier and protesting jocks of earlier.