The 2nd game will surely determine who's going to stay or not, right now notable players for the FC Kaiserslautern like Terrence Boyd, and Philipp Hercher are at risk of getting suspended, for having 4 yellow cards while in Dresden's case they have many injuries, so they are not in their 100% for even though they have their main players with them, I totally missed their first game but will make a pick on the 2nd game for sure on what may happen with the game,
Dresden vs Kaiserslautern 2.1/3.25/3.6
Dresden is the favorite, but not by a huge margin, so anything is possible basically.
Bookmakers don't expect many goals, odds for >2.5 goals are at 2.15
I am afraid the 2nd leg will just be as bad as the first one. I guess the best we could hope for is any goal at the beginning of the game to force the team which is behind to open up the game. If I had to make a bet I would probably go for "Dresden doesn't win" (draw or Kaiserlautern wins) which pays 1.71, which seems not too bad. I do expect Dresden to remain in the 2nd league, but as the game is more or less open, many things can happen.