Warhammer 40,000: Kill Team
12 Achievements
6-8h
Chapter Master
Play through each mission with two different Space Marines
9.7%
How to unlock the Chapter Master achievement in Warhammer 40,000: Kill Team - Definitive Guide
I would suggest playing through on co-op with a friend so you unlock all the powerful weapons and perks then play through as the Sternguard Veteran with a missile launcher, then special power charge +25% and pickup duration +25% perks. Use your special ability often and it should recharge quickly.
Playing as Sternguard Veteran allows you to keep the worst of it at well away from you and dodge most projectiles. I completed the whole game without dieing with this technique. Good luck!
An Easy way i found was to simply go through with the Sternguard Veteran. then once completed. Go through again with the Sternguard Veteran but just before the end of level, enter player 2 and it'll count as co-op. Thus two silhouettes are now uncovered and it's no sweat.
I just got the achievement using this method and can confirm it works.
If you played through all the missions with a single character the first time then you simply need to pick a second one and play through them again with that character.
I did this with the Sterngaurd Veteran and the Techmarine.
Edit: It will still count if you do a run through in co-op mode with a different character. Only the primary character will count though.
I've already played through the chapter I did in co-op mode so I can't easily test it sorry.
Select Campaign, and you will see four dark hollow models at the bottom of each mission representing each of the 4 Classes available. The models will fill up and your highest score will be displayed if you have used the class for the particular mission in Single Player. All you need to do is to have played each mission with any two Classes to unlock this trophy. Playing two classes on Co-Op does not count as there is a separate hollow model for Co-Op.
This achievement requires you to play through a mission with your preferred Marine and then playthrough again with one of the other 3 Marines. You can do this quickly by hitting x at the end of the mission to replay as a different Marine. You can also play once in coop and once solo with the same marine. If you want to play through twice as the same marine, Galve666 has a great tip: playthrough to the end of each mission and join in for coop using a second controller just before the mission ends. Same idea as chapter brother.