This Build is great for DPS. Be careful though as many of your team mates might expect you to go Tank with Garen. They need to be aware of what you are doing. Also you need to watch out as you are more squishy than a normal Garen. However you can usual pown players that aren't prepared for this kind of physical damage which is usually every one as they are all trying to go DPS. Yet Garen is the champion with probably the best base armor and magic resist give you good survivability one on one with other DPS champions. once you hit them they usually run, yet your frost keeps them close, aka they are running dead.

No skills needed even as the damage is so great.

This build works best when you are playing against a weak team. Skilled teams will counter this with proper range and tanks teaming up on you. However if you are playing with a skilled team against a skilled team, most of the time this build of Garen is not expected and will often surprise those who go up against you.

450+ damage with 100+% critical chance at 250% critical damage can be very strong. When adding the movement modifiers of the Frost Hammer and the Speed boots is a great way to keep those persky ranged players close and 3-5 hit them to death without any abilities being used. Usually if you are chasing down an opponent, do not use judgement as judgement takes longer to do than the duration of the frost so most of the time unless it is your killing hit the target will be able to get out of range from your attacks and escape to a Turret or even worse to their team and you end up ganked and dead.