Pic 258a: Start up middle and sides between spaces to stop infection. Use caution not to ignite bombs.
Pic 258b: Infection is contained. Clear remaining side to lower screen. May need to clear additional bubbles below bottom of bombs as well without igniting. Proceed up sides toward ceiling without igniting bombs. Drop sides with infection to lower screen.
Pic 258c: It is possible to drop ceiling without dropping or igniting bombs. Avoid shadow if possible.
[EDIT] Scroll down to find the Big Spider ALL new Levels video link list!
Finally we got new Levels today! Both Eternal Isles 28 and the Crystal Caves in shadow realm are open for free! The Picture Overview is from Crystal Caves Level 261 and made with a little help of the Charm of Scrolling. :)