There is a significant hit detection issue in the game, where it can take a massive amount of hits to attain a kill, both in MP and Missions, both AI and real human players seem to take and inordinate amount of hits whilst just "twitching" and have the ability to return fire and kill your character in two or three rounds.
This issue has been apparent from day one and is fast becoming a game breaker. The hit detection in Arma 1 ,2 and even in the original OFP were far , far superior. It is replicated repeatedly whenever I play, some times it feels like I am firing blanks, it is not uncommon to have to unload a full 30 round clip into other players to get a kill, to be clear this is not down to lag, my aiming ability, or anything else like that. The body armour players use seems to have no regular ability to measure how much damage is actually being done and this seems random, plus there is no realistic wounding, in earlier games two or three rounds to the legs would render you unable to run, in Arma3 you just twitch and judder and carry on running. This has been reported in a large thread on your official forums, but I have seen no acknowledgement of this problem, but what I have seen is a decrease in players from our squad and on our server, and with new players wondering just that the heck is going on, when they cannot kill a target with a full mag. This issue needs addressing urgently in my opinion as this is worse than the random deviation that was built into Battlefield 2, and not something I would expect from this franchise.