Wow, thanks for all the comments everyone. I'm going to hit on a few of the comments first, then specific ones.
Speed - I realize now the speed is low, I wanted the game to start slow and get faster. The platforms do increase the speed that they move, by five pixels every 10 seconds. Platforms are spawned randomly every 3 seconds. You can see the speed increase because some of the platforms will catch up to the ones ahead. Overall I think the speed should increase faster or there should be multiple difficulties that determines the speed.
Platform Spawning - I know it can spawn platforms that make the jump impossible. Its purely random on the Y axis so sometimes it spawns them right up at the top. It could be fixed by making it so that the platforms cannot spawns above where the player can fit. Initially I wanted the player to be able to jump outside of their worlds, as a way to get onto the platforms above, but it wasn't working out.
@YopSolo No its not. As Nsmurf mentioned I don't think securing a leaderboard is worthwhile for a 48 hour game. There is a maximum score set, but it was set impossibly high and I lowered it to reasonable now. This game technically has no end and the score could be really high if you got lucky with the platforms.
@Nsmurf I have noticed that jumping in the side of the platforms can bug out. and you end up falling through it. I recall having this problem in past versions of Construct 2, and finding a way to fix it. I'll look into it if I continue.
@joseadrian In any future versions I will for sure have either multiple difficulties for the speed, or have a speed ramp up faster.
@gandalf1209 Sorry, I knew the platform spawning was going to do it, but I couldn't think of a fix at the time.
@Gravity Games It does speed up, but its relatively slow to increase speed. The music was added at the last minutes, I had limited time today and managed to squeeze it in. I agree it is repetitious and I would like to have had more songs for it.
@dokidoki Thanks, I though it would be interesting to control two characters at the same time, specifically in an endless runner where at some point you are going to lose one of the two character, or sacrifice one. I will check out your submission as well as everyone else who has commented.
@kirbytails7 There is no lose condition, the goal is to run as far with both characters as you can. The lowest time that a character survives or the first one to fall out becomes the multiplier for the score. So it takes the time of the lowest run multiplied by the total of both runs.
@kadybat Thanks, I will certainly keep it in mind if I continue with it.
@tomkers Thanks, In any future versions I will increase the speed.
@Xenolupus Great I was a little worried about the theme showing, some of the early people that I had play the game saw it as a mirrored world, rather than a connected one. And while I think the two are similar I do not think a connected world needs to be the same.
@Weaver Yep...sounds about right.
@Greg Klein Agreed, I should have revisited the platform spawning when I blocked the character from jumping outside of the respective world. Speed slowly grows but I agree it starts of really slow and you tend to get an impossible jump before the speed increases greatly.
@StencylTuo It is basic, I had other stuff to do this weekend as well and did not end up with as much time as I would have liked. I also struggled with the theme in the beginning, so I started Saturday instead of late Friday. The platform spawning needs to be adjusted but initially the player could jump up to the platforms above the world space.
@Fanttum Thanks. I have had that happen while I've been playing. Sometimes there is no hope, but sometimes you can wait for one of the faster platforms to close the gap.
@Kate Kligman Glad to hear it, I am happy with how it has turned out in the time that I had.
Thanks again for all of the comments and feedback.