The only Halo I played was Halo Reach on the Xbox and being mostly a PC FPS player I struggled with the concept of aiming with a thumbstick.
I managed to go halfway through the game until I had enough... the game was not bad but missing easy shots because I moved like a tank infuriated me.
I'm glad Halo is on PC now, especially because I show Microsoft is more focused on the PC market.
I may play it if anything just to finish it on Legendary and say it was easy.
p.s. In before hordes of people point Halo 1 was on PC. If it was not on Steam it's like sex with Millhouse guys, it doesn't count.