First of all go jungle thats the best you can do when you have reached the level to do it on, cuz Loki dies pretty easy.
Gank enemies when you run to each buffs. (Don't forget to buy Creeping curse~)
Tip, dont gank if there is many enemies in screen
Remember that this is my first guide and i hope the build works great, happy assassin play :)
Hope it works well for you guys.