How about after the alphastar crashed SPOILER ALERT Dr. Aventon creates a new power core for the alphastar and when they fire it up the planet explodes firing truckatrons and geckasaurasus everywhere and the planets core is released, and collapses in on itself and warps the world and fires debris everywhere which creates some random things in worlds like basketball courts from tag to fishtopia.
what you need to do is go through the black hole entrance and close it, also things are constantly flying into the black hole as it grows larger and it shows a cutcene of the entrance closing so you have 15-20 minutes (You decide) until it closes, and your trapped forever at halfway mark a cutscenes appears of chemical supreme⦠and it breaks on a rock and then everything the rock touches comes alive, creates a lot of more creatures to fight.
Assassin: can do fast but low damage super quick
Angel: can heal people
Time-stopper: pauses falling objects or sentryās (barrier in front to top from shooting
Fast guy: max speed
strength guy: max strength
Machine gun dude: use the quantum portal machine gun guide.
Average Joe: litarly just regular stuff
Miner: has pickax can mine cracked blocks for faster, easier entry points
eh what about they broke Logic and reality and it made rips in the fabric of reality so now everything is now in the Armageddon alternate universe
and these rips in reality sucked you in forcefully and when sucked in you hear a familiar but unknown voice give you a mission to follow to get to the next Dimension
In each Dimension there should be a universal stitch to stitch up reality,
and oh yeh you should add if they do not complete their mission in 10 mins or die more than 3 times they fail and get Spagettified by this unknown force with a familiar voice
yeh that sounds cool and they come face to face with a hidden in the dark shadowy force that tells them what they did wrong and once he is done talking, you just disintegrate as if you were thanos snapped