Here we go!
Overall: main problem for me is some transitions still feel awkward/cramped. Other than that, the map is starting to turn into something wonderful!
Help nodes: I think they are well implemented, but I'm really unsure if they are necessary on Course A, other than A7. Basic detonator stuff is the exact same as basic rocket jumping, and there's already plenty of resources for that. They would only help players who are at their very first jumping experience. Some people might disagree though so it's worth asking around.
Here are the later levels where help nodes might be useful:
-Maybe B2, first real self-det
-B3: Mid air self-det (its the first one like that, can be a bit confusing at first to know what's intended)
-C8: 256 isnt quite max height, (max height is 271 as far as i know), but self-det is definitely required. You actually dont need advanced tech to get that high, just a good right strafe self-det. The jump needs to cost 42 hp minimum, it can be a good indicator of doing things right.
-D2: I'm still not sure to understand what's going on here, as I see it you need to kind of self-det powerbounce on the smaller ramp part to keep your forward speed, i dont really know how you would call it. But it definitely needs a help node (i remember spending 20 minutes on this thinking it was some sort of auto-edgebug)
-D4 possibly
A course detailing: good stuff! The only things bugging me are the layouts of A7 and B1. Feels cramped and unatural, but i'd have trouble telling you why. Also the little round ground light looks a bit out of place sometimes.
A course
-I like the new intro jump! I would move it a bit towards the spawn though so the area between A1 and A2 isnt too cramped, better flow.
-The range on the help node looks a bit short on A1, if you backpedal to see the whole jump you cant get the help text, making it harder to figure how these hints work at first.
-I find the node on A6 a bit unrelated, as the jump isnt really a strafing jump (going directly to the end in a straight line is simpler)
-I like the new crates on 6, it kind of justifies the tight space. However i'm not comfortable with the whole area from the 5-6 transition to the end of A course: it feels really cramped, if this is what you want I guess it's fine, I just personnally like to have a bit more breathing room.
-I don't like the help node on A7. Self-det is used mainly for 2 things: more distance, and easier jumping in awkward setups, since you don't need to shoot a surface. Self-det can give you higher jumps but to make it significant it requires advanced/unreliable techniques. On A7 I it's mainly the "makes it less awkward" case.
B course
overall: What if every time you had a pipe jump, you doubled it with a second layer of pipes next to it? Would it look better and keep the jumps as you want them? the size of these pipes just makes them look weird.
B6: thanks for removing that annoying ledge! However you forgot to remove the smoothing clip brush
B8: I like the new top part! Better flow
Cool jump sequence to practice self-det.
C Course
C1: Yeah! I like that new little deck! really catches the eye on where you need to go and reset is a lot less awkward! you could even trim it to make the jump tighter if you want.
C3: this might sound like the exact opposite of what I told you after _b3, but now that the texture is more unified, you probably need something to hint towards that ledge (maybe a light source?)
C5: OMG YES this feels so much better than previous version. It might even be a bit too easy now, i'll give it more tries.
C6: hey a det jump is actually needed at the end now! I like it! transition room feels super cramped after though.
D course
D1: Yes! feels so much better and fair!
D2-3 transition still a bit weird, pretty sure I like that new start setup better for D3 though!
D4: floor is like a mirror on dx8
D5: you could maybe tweak the distance of 2nd jump/height of third jump to make this level more challenging, as it is probably the easiest level on D. I love the layout.
D6: its still annoying to hit the lower part of the vent, but that new start makes the level soooo much better. Cool level layout. since this is a transition, could be worth it in my opinion to smooth the entry in the vent.
D7: I still find the last jump a bit hard, but maybe I just need to practice it a bit more. At least the level doesnt feel as unfair now.
D8: since this is the last level of the course, you could honestly make the last jump harder! That whole metal plat might not be necessary.
Course E
E1: WOOH I like the new layout! Jump could maybe even be made a tiny bit harder (maybe trim the first 2 ramps so they are further from each other?).
E6: Love the new 6! Feels fair, while keeping that little fear of fucking up the last jump!
E7; as of now I still see 7 as a big pile of not fun. I'd like to see how you do the 3rd jump, haven't been able to hit it yet.
E8: Could be made a bit harder! The start might look better if it was on the same level as the floor.