So the game runs really slowly on my poor little laptop. Why did you not include any option to change the quality anywhere?
You could have just left it on the right click menu if you couldn't be bothered to make a button for it. It doesn't exactly improve my rating of your game when you went out of your way to make it unplayable for me.
While you can become quite good at this game, the ultimate assassin achievement (within 30s and no corpse found) is largely due to luck, you simply have to play the mission over and over until the green guy finds himself alone within the first 20 seconds of the mission. It doesn't matter how great you are at the game if the guards are close to the green man, you just can't clear it.
The game has a lot of potential but squanders it with some pretty big flaws. Firstly, the pacing of the game is extremely dull. The player moves very slowly and actions like scrolling the screen or entering a door takes a lot of time. Fast-traveling solves the problem somewhat, but it feels like a band-aid fix on what could have been solved more elegantly. The developer should have sat down and thought about ways to increase the pace of the game instead.
The very simplistic AI of the enemies worses the situation, often you just stand there striking them over and over. The only reason the game is a challenge is because the enemies have a lot of HP and do a lot of damage, which is again a band-aid fix on a problem that could be solved with things such as unpredictable movement, creative enemy abilities, and so on.
A lot of work and care has gone into making the game look great, but a game cannot live on looks alone, even if it's 8-bit.
Wait what? I have two challanges left for the hard badge, so I took a break, but now I come back to find data isn't saved? You should really warn about that.
 "Escape From 26")
 "Min Hero: Tower of Sages")
 "Experimental Shooter 2")
 "Ultimate Assassin 3")
 "Legend of Pandora")
 "Takeover")
 "Death vs Monstars 2")
 "The Light Temple")