the animated scanline effects on the briefing screen makes me a little bit dizzy though,
Noted, thanks - I'll slow them down a bit so it's not so striking.
maybe add a silent takedown mechanics, to bring down guards without noise
and since it's a stealth mission, don't you think it's better to bring a gun with a silencer?
Not a bad idea, but I'm trying to gear the game more towards being stealthy and non-lethal. I am rewarding the player for getting in and out without being detected, and punishing them for what in the real world would be murder (the guards are, after all, just doing their jobs.) I hope to emphasize this later in the story. The player is not a cold-hearted killer, they are a trained professional.
A lot of games are all about action, and often lacking in real-world ethics. Sure, games are great for escapism - but we shouldn't have to kill to be entertained. :)