I like the concept of a mimic dungeon. It is a great setting.
Picking your character was in Spanish, while everything else was English. I played solo with the artificer.
It would be nice if there was a visual aid to keep track of your ammo, and more so, the reload delay.
It was interesting using the mouse or right stick to aim, but having the character only able to shoot in front of them, resulting in needing to better coordinate your shooting and movement. I like the concept, though it will take a bit of getting used to. It would be nice if while moving they had at least some ability to shoot other than straight ahead. Maybe 15-30 degrees off center to either side. Having to run out to where the enemy is shooting you and stop, then line up your shot was frustrating. This was most notable when needing to get around obstacles requiring facing the wrong way and unable to be shooting as soon as you cleared it, but stopping guaranteed getting hit. Maybe with more practice I'd work out a better strategy, but it felt like there wasn't a good way to hit many of the enemies without taking a bunch of damage and needing to heal.
I started playing with a gamepad, but as the room with the merchant loaded it stopped working and I switched to keyboard and mouse. I wasn't sure of all the keys, so pressed things to figure out what I could. Other than not being sure of the keys both seemed OK ways to play.