L13 - Subway

You'll start off heading right. When a train comes your way, don't panic! Just jump up and stick to the ceiling. You don't even need to use your web-zipper for this. Keep moving right, sticking to the ceiling to avoid any oncoming trains. You'll eventually reach the area between the train stations. Just keep to the ceiling to stay safe. Once you reach the end of this section, you'll need to drop down to the ground. Just make sure there are no trains around before you do.

Now, head through the hole in the ground and make your way left. You'll encounter some people to deal with here. After that, jump up to the ceiling. You'll notice a section of the ceiling that slopes downwards. Stop here and wait for the next train to pass, then continue moving left. You'll need to do this for any other downward-sloping ceiling sections you encounter. Keep going left, and eventually, you'll have to drop down another level.

Time to head right again. You'll come across another sloping ceiling section. Wait for a train to pass, then drop down. Now you'll be running along the ground for a bit. You'll see an opening in the ground you can fall into – this time, no need to duck or wait for anything! Just keep moving right. You'll find some enemies and a health pickup. After that, you'll need to fall down another level.

Once you land after that long drop, just head left. Be ready, though – there's a large gap coming up that will require some careful jumping and web-zipping to get across. Keep pushing left after you clear the gap, and the rest of this section should be pretty smooth sailing.