Portal 2

Portal 2

143 ratings
Collision Course
File Size
36.861 MB
Aug 7, 2012 @ 9:26pm
Oct 29, 2012 @ 7:33pm
3 Change Notes ( view )

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Collision Course

A test that requires using elements from both an 70's enrichment sphere and a modern test chamber. Video is a playthrough.

Update History-
R2-Toned back or removed red herrings
R3-revamped parts of test to remove "loops" and make it more obvious as to where you need to go
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Shym8 Aug 1 @ 8:23pm 
I looooove this map!
sentientcloudwastaken Oct 10, 2015 @ 10:30pm 
So... I solved it without visiting the second old test chamber and I didn't need the funnel to get the blue gel. Also I totally overshot the exit.
TheIncredibleKraken Aug 15, 2014 @ 6:54am 
This is awesome
wildgoosespeeder Aug 7, 2014 @ 5:51pm 
Holy crap this one has intensive Hammer usage! This is a very ambitious map you created. I got stuck a few times just because I never saw anything like it before or I just didn't get what to do to get there. Just curious, did you export a map from the in-game editor and make it crooked in Hammer? I also felt the entire playthrough was of random difficulty. Like it starts off pretty easy, then it gets hard, and then it gets easier, all in the same map. I did have to peek at the solution video a few times because of the unusual level design.
p0rtalmaster Oct 6, 2013 @ 7:02am 
Hello again. Just checking out some old tests on my new system. This one is especially memorble :D

Perhaps I wasn't specific enough last year as to the confusions...
1) I found a convincing near-solution that involves an angular fling out of the new test chamber and off of repulsion gel.
2) As for accessing the gels, I didn't quite need the gels the same way you did. I found I could use propulsion gel instead of repulsion gel in some places (or even no gel at all). As such I didn't need the old area nearby the new area at all.
3) It's not entirely obvious that propulsion gel is needed to exit by running off of the top of the test chamber.
Nobody No-One Mar 19, 2013 @ 6:19am 
Guys, you have to think logically. Start at the exit and work your way backwards. Hope that helps. The exit is the one in the modern room.
Nobody No-One Mar 19, 2013 @ 5:47am 
Beautiful map. Simply Amazing. Favorited.
p0rtalmaster Sep 26, 2012 @ 4:29pm 
I found it confusing. Love the theme, but could use maybe a few more hints as to where to go and what to do.
mikemoody Sep 17, 2012 @ 9:22pm 
Damn Layne that was the hardest and longest map I've ever seen. I had to follow your video and it was still hard, I did some things over and over. Hey but I stuck to the end and made me feel real good to see all that stuff. I really don't know how you came up with all that but thats some really nice and wild playing. Thanks a million. I'll come back another day and try it on my own. LOL like my mind can remember all that. :)
Dassin Aug 19, 2012 @ 9:14pm 
Loved the old meets new. Totally cool. I don't think it was too hard so much as it had more going back to do stuff then what I like. Lead me to blow off reconizing the finish line for anything more than decoration for a while.