I think you might enjoy Trepang2.
It is heavily inspired by the combat in F.E.A.R., has unlockables and arena modes for some replayability. There is a demo and a sale on GOG.
There is a demo out on Steam, if anyone wants to try it.
Edit: So, I played the demo. Takes about 30 minutes. The game has a lot of charm, but that much was clear from the trailer. The gameplay is... basic. There is a map on which missions pop up. You choose the hero to send there, based on their skills. You get some hacking minigames and every now and then you can choose what your character says or does in a cutscene.
If I had to critique something else besides the basic gameplay, it's the lack of feedback after a mission. You get a voice line and a little graph that shows how well your chosen hero's skills matched the requirements of the mission.
Also some missions were clearly meant to be done by one specific hero, but if they are on cooldown or already busy elsewhere you have to send someone else. Made me feel like I did something wrong. I think the game will be its strongest after you have already played it once. Knowing who to send where and being aware of character specific missions. But at the same time, a lot of the charm of the game will be gone by the second time you play it, since you already saw most of the very well done cutscenes.
I strongly recommend Four Last Things and The Procession to Calvary. Death of the Reprobate to a lesser degree, the humor got a bit too juvenile for my taste.
The games are Point and Clicks with the animation style straight up borrowed from Monty Python. Almost all the art is taken from renaissance pieces and there are many inside jokes about them.
Sounds more melancholic to mean than neutral, but maybe that's subjective. I don't know of any specific album that sounds like this though, besides more slow piano music.
Maybe try some atmospheric music. You will find tons of it on Youtube and elsewhere. Some faster, some slower. Most of it is pretty neutral.
Oh, das sollte eigentlich auf music@lemmy.world landen. Egal, nun wohnt es hier.