Warhammer 40,000: Kill Team
12 Achievements
6-8h
Tactical
Unlock all weapons & ability upgrades
31.7%
How to unlock the Tactical achievement in Warhammer 40,000: Kill Team - Definitive Guide
Updated and clarified
The total score when i got this achievement was around 6.000.000 You can find your total score in player stats (third option of the main menu).
The game seems to be random in which item it will work towards unlocking with the points you earn and it will unlock weapons for the characters that you are not currently playing at.
Just keep playing through the missions and you should unlock this by the time you have done Chapter Master.
Each Class starts with 1 default Primary weapon (melee weapons for Librarian/Vanguard Veteran, ranged weapons for Sternguard Veteran/Techmarine) and a further 2 stronger Primary weapons are unlocked by playing the game and increasing your Total Score through destroying objects and killing enemies. Your scores are accumulated across every level in Campaign modes.
The same unlocking procedure applies to 7 different types of abilities (+Health, +Melee Damage, +Range Damage, +Powerup Duration, +Special Damage, +Special Charge Rate, +Grenade Slots) that are shared by every class. Each ability is divided into 3 ranks, and as you score more points the more powerful ranks are unlocked. You will have all of them unlocked by the time you complete your 2nd playthrough.
To unlock all weapons and ability upgrades you need to simply kill everything and blow everything up for points. Massive killing sprees give huge combo points to help you advance quicker. In general, you will have all of the weapons (one character can unlock all of the weapons in the game) by the end of your first playthrough and you should have all, or nearly all of the upgrades. Doing something similar to the upgrade seems to make it more likely that you will upgrade that first, such as increasing your melee damage always occurred when I killed a number of enemies at close range, even with my gun. Note that survival does not count toward this achievement.