I don't mind the difficulty. Knowing your death may well be in the next room adds a certain spice to the game.
The only thing that bugs me is how good the purple plasma launchers are.
If you have no cover and no speed++ they're pretty hard to evade, especially if you're busy elsewhere and don't notice them. They can also fire from outside depth of field range, so the first thing you know about it is when purple fireballs start appearing.
I was one-shotted by one not that long ago and just got killed in the fiery maw foundry room - there was a whole bunch of them on a ledge and I was trying to stay under it but a swarm of floaters was in there as well, so I was getting shot from above and below.
If you wanted to make them a bit easier, I'd recommend:
- Reducing the turn rate of the missile, or
- Slowing down the missile, or
- Halving the health of the turret, so it becomes fragile, but very damaging