One important point that you need to know!

You can:
• Play in Players Lobby — XP is earned.
  
• Play on Dedicated Servers — XP is earned.
  
• Play in Ranked Matches — XP is earned.

Most players now prefer play on Dedicated Servers, but you can also gather friends in the Players Lobby. Although the achievement descriptions mention "Ranked Match", you can actually unlock them in any mode that grants XP — with the only exception being Survival mode, where XP is not awarded.

https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3396452432

We play In community Fury 161 and you also can find players and help with gathering online achievments!
Steam Group, Chat

If you get any in-game issues you can find solution here:
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3396426835

You can get this achievement during the "Real Nasty Habbit" achievement, no additional information is required.

To get an achievement, you can simply play online, or to get an achievement faster on your own, without the help of other players, use the following guide: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=576498813

Play Survivor, take damage, heal, and repeat.

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For faster progress, play on the [F161] SV || Marines – Respawn (US) server which allows respawning mid-game.

P.S.: The server may be turned off at the time of your reading of the manual.

You can complete this achievement yourself, but to complete it faster, we recommend that you recruit as many players as possible (maximum 4) and launch the Block C map. In this map, in the first round, Aliens will appear from behind the barricade, and you need to kill them as quickly as possible. The more players there are, the more Aliens will appear on the map at the same time.

With 4 players online, the achievement should be obtained during the first wave of enemies!

Despite the description, this achievement can be unlocked in any online match that grants XP – including Players Lobby and Dedicated Servers. This achievement can be completed during the execution of the Serial Killer achievement.

Simply win a match of Deathmatch. Play on Ranked Matches is not really required. This achievement can be completed during the execution of the Serial Killer achievement.

Recommended Method:

Create a Private Lobby with friends.

Select:
• Match Type: Deathmatch
  
• Map: Jungle (smallest map)
  
• Time Limit: 5
  
• Score Limit: 10

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Alternatively, use a dedicated server such as “Achievements|Unlock”, configured with a Score Limit: 1. This way, the match ends instantly when the first kill is made.

P.S.: The server may be turned off at the time of your reading of the manual.

Make Kill Streak 10 enemies in a row.

This achievement can be achieved by multiple players together in one round:

Setup:
• Match Type: Mixed Species Team Deathmatch (MSTDM)
  
• Map: Jungle
  
• Time Limit: 30 minutes
  
• Score Limit: Depends on the number of players.

Let all the people who doesnt need the achievement stay in Team 1 and let them be aliens (fast runners) and let all people who needs the achievements be marines in Team 2.
Setup a score limit based on the number of players on Team 2, for example if you have 3 marines you will setup a Score limit of 30, so each marine can get his 10 kills. (Or slightly higher so there's some room for errors!)

Start the match and let the fun begins, aliens will willingfully run to the marines to be butchered and marines will not die, nor hurt each other by accident. (Disable always friendly fire! You cannot hurt friends in your team!) So each Team 2 player can get this achievement in the same match!

This will usually unlock naturally when going for Tough Hombre.
For achieve Persecutor status you need kill the same target 5 times in a row.

Requires minimum 4 players. Create an Infestation match, decide who will attempt the achievement first. Once the first Alien appears, other players should die on purpose, leaving one last survivor to earn the achievement.

Gather 6 friends (7 players total including yourself) and start any match together.
They all need to be steam friends, so double check that all 6 people are in your friend list before start the match, the achievement will unlock once all people are loaded into the chosen map.