Roger is really over powered hero with this build, you can try this build and feedback by commenting. Items gives you attack damage but you are not durable.
Roger High Damage Build
Firstly: Warrior Boots
Tanky build means Warrior Boots, it’s just nice mobility and a lot of armor to add to your arsenal.
Then: Berserkers Fury
High Physical Damage and Crit Chance, it makes our crits 40% stronger making it a key component of our build.
Then: Haass Claws
High Physical Damage and very high Lifesteal, it will give Roger all the self sustain he needs.
Then: Scarlet Phantom
Low Physical Damage and Crit Chance but very high Attack Speed, thanks to his passive we will get a lot more Attack Speed and some more Crit Chance. This item will increase our DPS by a lot, combining it with our 2nd skill in Wolf Form we will attack extremely fast.
Then: Malefic Roar
High Physical Damage and Physical Penetration, it also gives some nice additional damage versus buildings. This item will make sure that our damage will be high versus all kind of targets even if they tried to counter us by building Armor.
Finally: Blade of Despair
Very high Physical Damage and medium Attack Speed and low Crit Chance, the passive can situationally increase our damage even more. Nice item to close the build to achieve insane damage potential.
If there is an Estes in the enemy team buy Deadly Blade instead of Malefic Roar. In the ultra-late game you can consider selling your Warrior Boots for Immortality.