4. Bullet Hell

Description:There's plenty of places where you could just get lucky with this one, though some heists are better than others. The first floor of the house on Rats day 1 fills up with feds quickly due to how many entrances there are. If you're a Techforcer or a particularly suicidal Ghostmind, you could also try to camp the basement until enough units spawn, then push through the doorway and cut them all down like that. I've also found that the alleyway behind the convenience and computer stores on Four Stores clusters enemies together quite nicely, even on normal difficulty. Lastly, Jewelry Store/Ukrainian Job are good heists because it's so small and the cops take cover behind cars that are parked so close together. You can wait for them to build up outside, run out, take out the ones in cover behind the cars and fence, then far down the road and into the alleys to hit the ones spawning in.