Low Level Optimization

[fulong]

What's a class that can do stupid amount of damage at low level consistently between level 1 to level 5. My group is running Phandelver at the moment.

[Gazzien]

I think for straight damage it's probably the orc / half-orc barbarian?

STR boost, two-handed, rage, power attack?

[fulong]

oh i forgot that this is for 5e or D&D next

[linklord231]

At low levels, Two-Weapon Fighting is pretty much the way to go. 
A TWF Ranger dual-wielding any of the 1d8 weapons with Hunter's Mark up can do 2d8 + 2d6 + 6 damage, average 22.  That's at level 2. 

You could sacrifice two points of damage to use a pair of d6 finesse weapons instead of d8 strength weapons, which would allow you to have Dex as your high ability instead of Str, which is probably worth it. 

[Shadowhunter]

Observe that Hunter's Mark is a spell that doesn't buff all attacks, just attacks against a specific target. Just something to keep in mind.

[caelic]

Moon Druid 2/Monk 1 in brown bear form.

Three attacks for 1d8+4/2d6+4/2d6+4 ain't bad, and that's without any buffs.