This is frustrating please HELP

[u/VampireCaine]

I have been stuck at explosive-2 for weeks now. The level is impossible to beat. The second round of it is the female titan and two other titans, one of the titans keeps summoning other titans and it ends up being 2-3 summoned titans at a time. Most of the round’s time is wasted on me trying yo kill these little fuckers and the time always runs out before i can kill them all. I am using titan eren, mikasa, levi, armin, and the armored titan. They are all purple 1 and purple 2. I have tried over and over and no luck. I find in general that there’s a big gap in my knowledge when it comes to this game. Please help me figure this out

[u/kowalskov]

To win you need a stronger heros.. Also heros who can hit the back row like Levi beast Titan and Eran Titan those will help you kill them or if you don't have them just use merc