I'm probably a good 25 hours into Deathloop. Now that I've figured out the "rules" to the world, it's absolutely worth it. The gist of it: You repeat the same day every day on an island run by eight "visionaries," all of whom you need to kill to "break the loop" of repeating days. But if you don't kill them all in the same day, then everything resets. There are four parts to the day: morning, noon, afternoon, evening. There are also only four parts of the island. So you can spend all "morning" on one part of the island, spend as long as you want there, and then when you leave that area, it advances to noon, and you can go to a different part of the island. If you do something in the morning, it affects what happens the rest of that day. So a lot of the game is figuring out how to get multiple visionaries into the same location at the same time of day so that you can kill them efficiently and end the loop.
The same developer made the Dishonored games, so if you like those, you'll probably like Deathloop. You have devices that give you invisibility, telekinesis, teleportation, etc., but you can only equip two powers, which is annoying. You have a third power that essentially gives you two extra "lives" per level, which you can't unequip. This is related to my main gripe: You can't save your game mid-level. The game only saves when you leave a level and the day advances (morning to noon, noon to afternoon, etc). So you really need to plan to have a good 1-2 hours free to complete a level. (This is annoying for me, because I have only about 1-2 hours to play every night, and I hate going to bed late.)
Pretty fun game so far, glad I didn't get frustrated and quit in the beginning.
