Ok yeah those green things are pretty easy if you cycle while reloading between AR and HMG with a power weapon for last minute closeup if needed. I never knew about cycling weapons while reloading to get a constant stream of fire. It's making things a lot easier, lol.
Finished up Act 1 on hard, once I got my HMG damage up (last run I maxed shotgun first as my main, this time I'm maxing HMG first) it honestly didn't feel much different than on normal. Though yeah less hits until your dead. Hopefully the enemy groups will get more interesting later on compared to normal run. Still, game is so fun. Best shooter ever once you learn how to play.
Also what decides the upgrade drop rate? I've gotten like 4x the amount of upgrade drops on this run. On normal it probably took me 3 acts to max my first weapon. Here I'm at rank 8 already by the end of act 1.