
This is a relatively tough room for that level.
What I would suggest is:
1.
Click here to view the secret text
×In each section, try to get all of the roaches into the area between the two arrows. If you do, you can safely step onto one of the arrows.
2.
Click here to view the secret text
×You'll have to clear out some roaches in the later sections before you can get them all between the arrows. To do this, you'll have to lure them onto the arrows one at a time and kill them.
Last resort, if you look at
this thread (link), I posted a demo of all of level 10 - if you import it, you can watch my demo for this room.
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The greatness of a nation and its moral progress can be judged by the way it treats its animals.
--
Mahatma Gandhi