If you got stuck on Level 4 on Yuri like I did, fret no more! It is highly likely that you couldn’t figure out how to climb the spider-web stairs (you’ll know exactly what I’m talking about once you get there). The first stairs break right in the middle, which is easy to discover. Second stairs is not so easy to figure out though. So here is your mini-walkthrough: they break at the very left, above the spider guarding it. It’s a bit tricky to jump over that spider and break the web, but once you know it is there, it shouldn’t take too much of your time.
Hope this mini walkthrough helped you!