After you get out of the sewers, you will get into a shooting segment with 4 waves of robots. SAVE between waves if you don't take any hits.
*Saving between waves may not work after latest patch.*
Try to shoot enemies when they overlap and just be quick on your feet.
First Wave: 1 Malcom Jr. (Center, 1 Hit)
Second Wave: 3 Flying ROM (Top Row, 2 Hits), then 2 Malcom Jr. (Center, 1 Hit)
Third Wave: 2 Flying ROM (Top Row Left and Right, 2 Hits) and 1 Malcom (Center, 3 Hits)
Fourth Wave: 3 Flying ROM (Top Row, 2 Hits) and 2 Malcom (Left and Right, 3 Hits)