What if the "Suicide guy" actually was the only one in your team who did the mission objectives and died all the time just because the rest of team kept randomly shooting infinitely respawning mobs without any actual contribution to the mission progress?
It is rather impossible to evaluate someones performance in the game where mission goals aren't exactly just "go from point A to point B, kill everything that moves in the process and the dude with best kdr is the king". This actually is one of those rare games where team play matters and the outcome of the mission can't be decided by just one player.
I just can't imagine any kind of algorithm on how to evaluate single player performance in RotBP.

So for you the objectives is only to kill antagonist ? (i didn't say the 2 others players and myself was concentrate only to shoot at npc, i kill the antagonist 8 times and the 2 others kill him too, many times compared to the suicide guy, who's kill it only 2 times, but i'm here for say who's have the big one, only if he not leave, we win, but just because he was the host, when we migrate we have to restart all the wave at only 3, so maybe the antagonist was too much concentrate on kill him easily, for boost he's score too, and yes it's help hus to kill the antagonist with traps and anbush, but after he understand owr tactical when he have the possibility to restart he was more "good" for anbush him and he was concentrate at shoot the protector to finish the most quickly the mission after this).
 
There are many things who's can be, to evaluate solo players performance (like how much time you survive with aleph/and with max aleph, kill assist, do the objectif of the mission, how much time you kill the antagonist, how much time he kill you,...) and many things who's can't be implementate too (like cover a players when he try to restore his life because he rush just like he was invincible and he was trap by so much npc,...).

mmm maybe i'm just lucky, but i always have a blueprint, when there is a antagonist against you, even if he leave the match and you play only 2 minutes, if you fails i'm not sure about this.
But still i already have a blueprint without antagonist in a match, so if you have a antagonist in you match the game is more hard, so i think it's for this you got a blueprint always when there appear.

Okay, so let me explain, i play two time this mission and i always meet this problem, in the second session of the mission, when you have to put aleph in the reflator to do damage to the ships, who's when to shot the boat the players are so fucking stupid and they always shot at all the reflactor to destroy them .
So no damage be done and the time pass even when you put aleph in the front of his asshole players, they still shot even if you say "ok" and "help" or to "come with you" they don't listen and shot the reflactors, even when you shot the player for they understand they do shit they don't understand and continue, when i see those player i really understand many players quit match and leave it's normal with syupid peoples like this.
Please do somethings two options to put for this situations :
the first one and the better is to players can't do damage to reflactor
the second who's gonna put much more problem (for people who's love to break the play of the other players for they becaome happy) is to put vote for expulse players.
Sorry for the bad words, but i play almost 4 hours and love it, and i wanted to play more, but the hell of this two last matchs make me feel so frusted, because i don't want to leave and even if you ask a vote to retreat they don't want and things they do the good choose.
so it's was like a trap with pogomen with 1 QI in they heads.
I can't understand when you shot the first one and you see the live of the "boss" ship didn't move, you try to use you head to think maybe like "i don't do it right i have to think in other options" you don't continue at the last seconds to do the same shit and the more is not like you already do it in a previously mission to put aleph to somethings to pass to the other part of the mission, my god after this match i leave my ps4 this make me feel i have to maybe pass to another game, if it's continue with this mentality, it's was like this, at every games the first mouth all the good players are here and when the child and the casual players who's discuss and watch tv same time appear, they all leave and the "fans" have to play with this, ahhh i think i change the suggest a little but so hard for hus, we always have to  "help" this stupid players for they play without use there head, like big icons for they know what to do, or block all the freely to put one ways, so all the players leave after it's too easy so frustating and more when the game is good.