‘Edited from original’ post to actually help people understand this since the guides/info online are completely false.
Say you do 800m a game at 15 minutes, round it off to 1km a game obviously it’s simple 1km to 100 games is 100km…
Add all the time you’ve actually used the tree as well throughout your game play from lvl 1 to 150
Your looking at 1500 minutes total witch is 25 hours for this achievement. With rarely any proof of the actual trophy/achievement this is the conclusion I’ve come to after using my bloody brain and not peoples ‘here say’
Use private match remove fire team and increase Predator speed to 125 in the modifiers & increase game time to whatever suits you. Complete the game mode
‘must do to add whatever the games decides to calculate into your total’
and enjoy hating yourself for doing this like i have already for 11 hours. <3