How to stay in top 10 of PVE?

I reached #1 spot in PVE (lvl9) two days in a row, but in the end I drop to a mediocre in top 100. Why is that? Is there a difference in 4/6, 5/6 regeneration timers? Surely I do something wrong, what is it?
Tagged:
0
Comments
This would especially be a problem if you don’t have a cache of health packs. Playing mission 4 on the current event as a $0 player means i probably win about 75% of the battles, depending on how bad the gem drops are, but even if I win, chances are it wipes my team out enough that I am using 2 or 3 health packs to do another mission. So, I can get in like 3-5 missions in before I have to wait a couple hours for my characters to self-heal.
After just over 3 weeks, I have finished top 100 a couple times, top 50 once, and top 10 2x. The “top 100” rewards were better than the “top 10 rewards”, though the “top 50” was the best. I would NOT stress about missing the top, as the rewards are definitely not worth the required effort if you can’t reach #1 and get the hero points.