Well, I can't explain well, but
- Make 2 rows with 2 squares seperating them.
- Make one row explode 1 at a time going up. Make the other go down.
- Make it 14 squares high/long whichever direction you want to run in.
- Make it 2 sqaures thick.
- On the 2nd to bottom/first explosion create an area to rest. (Meaning 3 & 4 squares up make a spot in the middle connecting the two rows where you rest.)
- On the second to the top/last explosion make another area in the middle connecting the two rows.
- After the explosions going up and down finish, make 2 explosions that happen at the same time in the middle two rest areas, but make it just enough time to escape and move on.
If you understand that then yay me because I suck at explaining but if you dont understand then I'll make a map for you to explain it better. Good luck.