I originally had this whole long review written out complaining about the extreme precision needed for certain jumps. But then I soft locked myself on test chamber 13/16 by putting one drop of blue goo where I did not need too. With no way to remove it, there is no way to beat the test. And due to awkward flag placement, I cannot even use noclip to just skip it.

Its insulting that a mod this fiddly got Valve's endorsement, I only paid a dollar for it on sale and I feel like I was ripped off.

Really good mod even though it's paid, which is a shame, but I still enjoyed it and the fact that there is a paint gun instead of a portal gunis awsome and really interesting.

Its a really good addition to an already great game, I 100% say you buy it.