First time playing. Here's my thoughts broken down by category:
GAMEPLAY
The game is fun. I can't believe I never bothered to try it before this. The way it flows is just really engaging.
The whole web of different mechanics is really fun to experiment with, but also kind of overwhelming initially because of how many options there are. I think it's a problem when the player is given so many options right from the get go and has nothing to go on regarding what most of them do, apart from stats and a text description.
The stun grenade's effect is too short imo. It might be for balancing reasons but it really disincentivizes using it when you can't rely on it to give you enough time to act.
The AI (for the squads at least) is really good. Was a pleasant surprise since games like these live or die by the quality of their AI. My squad members didn't do anything annoying or retarded even once. The enemy AI can be a bit spastic at times and often seems like their main strategy is swarming you in a mass suicide charge.
UI
The UI is functional, but often feels overly convoluted and unintuitive. Screens like the loadout select screen are arranged in such a way that you can't really read the information easily and don't immediately visually identify what you should be paying attention to. The whole loadout selection process is too tangled for something I would consider the best function of the game.
Also I understand it might be because this is a wip demo, but the UI lacks its own unique identity.
PRESENTATION
The music gives the game an exciting feeling. It might also be one of the aspects of the game with the most personality. The humour is a matter of taste. It got some chuckles from me.
I don't usually like kitchen sink fantasy settings at all, but it works well as the main gimmick of the game. I like that the weapons are inspired by fantasy tropes. You could expand on that design direction.
Probably the most disappointing part of the game would be the lack of visual variety in the maps. Maybe it's something that is planned for the future, but now all maps use the exact same visuals, and while the game insists that each raid takes place in a different location it would be cool to see that in the environments themselves.
BUGS AND PROBLEMS
Character controller broke one time because an enemy attacked me while arresting another enemy. Had to restart the level.
And I think there was something wrong with the third mission of the tutorial (the one that teaches squad controlls), since it doesn't give the option to select squad members in loadouts, so when the mission starts there is no one but the player character in the enclosed room.