Enemies are quite brutal. The melee ones are fast and hit hard. The projectile ones react quickly, and I suspect they keep shooting at you even when they can’t see you.
As this is my first (and only) playthrough, I want to try as many weapons as possible. It’s great that you get to use most of your arsenal. Mauser is almost like a battle rifle, fast and accurate. The Tommy Gun upgraded into a laser beam is super powerful.
The only disappointment is the grenade launcher. Indirect fire is often very beneficial, but it’s not very effective here.
Underwater level was a bit of a surprise. Not something I expected in an old-school shooter.