I tried and did on 700.
I managed to do the most part quite "easily" (I would say) but got stuck for a big while on the fire platforms and then the U-turn.
I'll try a little bit more tomorrow and see if I can do better.
You have probably noticed on the video, I crouched before jumping quite oftenly.
That worked very very well for long distances (even on default gravity) but not at all when it came to reach a tall surface.
As for the map, I still have a lot to learn. All I did for the moment was creating blocks, moving blocks, cutting blocks, putting lots of fires^^ (that sometime drop for no reason), some random lights, placing textures (best part), "painting geometry" (awesome tool and so easy), working on the global dimensions (again and again - well, not for this map actually) etc.
This map was just some kind of arena, one big room with some junctions... a test map where I can shape things I have in mind.
If you say that it looks like some random TF2 map, thanks! xD Because for me it looks like nothing
I just made a hole in my arena's roof this morning then add some blocks. é_è
But you're right, I get your point.
Even though, if I had to choose, I'd rather play a visually crappy game with some awesome gameplay than the opposite.
I'll take a look at your advice, thanks.
Actually, that won't really help me since I need thousand of advices
Sorry to monopolize your thread