A friend of mine is building a dwarf ranger to my campaign, so I was going to propose him either a 2-weapon Ranger or a beast master (World of warcraft oppening style).
Dwarves, at least by mid-level, make excellent two-weapon rangers; they do need a couple of feats to provide the necessary defenses, though (Armor feats in particular are needed).
- with dwarf weapon training he could use superior axes right? And add +2 to the damage of twin-cheesy-strike.
Yeah, that works.
With the same feat he could instead use a Dwarven Urgoosh, but would loose some damage and gain +1 AC, right?
Also works. Note that he only loses some damage compared to waraxes on his off-hand attack.
- he could go beast master and use the urgoosh too right?
Yup. Most Beastmaster builds I have seen tend to go for big two-handed weapon attacks, but then the Ugrosh can do that and still function as a double weapon.
- how about speciallyze in heavy trown? Is it viable at higher levels?
The problem is, you cannot specialize in heavy thrown. It only works on melee basic attacks by RAW, meaning that all your powers will still work with Dexterity rather than Strength. If you're willing to house-rule this, then yes, I think that's viable.
Here's an example from the Character Builder. You didn't really suggest a level, so I'm going to go for level 6.
====== Created Using Wizards of the Coast D&D Character Builder ======
level 6
Dwarf, Ranger
Fighting Style: Two-Blade Fighting Style
FINAL ABILITY SCORES
Str 18, Con 16, Dex 10, Int 10, Wis 17, Cha 8.
STARTING ABILITY SCORES
Str 17, Con 14, Dex 10, Int 10, Wis 14, Cha 8.
AC: 21 Fort: 19 Reflex: 15 Will: 17
HP: 58 Surges: 9 Surge Value: 14
TRAINED SKILLS
Dungeoneering +13, Perception +11, Nature +11, Endurance +13, Athletics +11
UNTRAINED SKILLS
Acrobatics +2, Arcana +3, Bluff +2, Diplomacy +2, Heal +6, History +3, Insight +6, Intimidate +2, Religion +3, Stealth +2, Streetwise +2, Thievery +2
FEATS
Level 1: Dwarven Weapon Training
Level 2: Expert Tracker
Level 4: Armor Proficiency (Chainmail)
Level 6: Weapon Expertise (Axe)
POWERS
Ranger at-will 1: Twin Strike
Ranger at-will 1: Hit and Run
Ranger encounter 1: Off-Hand Strike
Ranger daily 1: Jaws of the Wolf
Ranger utility 2: Yield Ground
Ranger encounter 3: Disruptive Strike
Ranger daily 5: Frenzied Skirmish
Ranger utility 6: Weave Through the Fray
ITEMS
Lifedrinker Urgrosh +2, Cloak of the Walking Wounded +1, Dwarven Chainmail +1
====== Copy to Clipboard and Press the Import Button on the Summary Tab ======
Other feats you might find useful for this build are Scale Armor proficiency, Two-Weapon Fighting and Defense, and (on Paragon) Deadly Axe.