Slipperyfish Scallopini - Drow Elf Rogue Mechanic

Now, I know I didn't make this build, nor am I taking ANY credit for any of it, but this is the template that I am using for Slipperyfish.  I am just reposting it here, as it came from the forums, and we won't have the forums for much longer, I think...  If you know who, or are the original creator of this build, please give me a holler, and I will credit you.  Have a great day!

-----------------------------------------------------------------------------------------

Concept: Focus on traps, locks, and sneak, relying on repeating crossbows for damage
Original path's flaws: Con too low, no Toughness, feats not suited to usage of repeating crossbows
Main fixes: Gave more HPs and better damage output with crossbows

Alignment: Chaotic Neutral, Chaotic Good, Neutral, Neutral Good, Lawful Neutral, Lawful Good

Stats and Race (28/32 pt):
........Drow.....Dwarf......Elf.....Halfling...Human...Warforged.
.Str.....10........10........10........10........10........10....
.Dex.....18........16........18......17/18.......16........16....
.Con.....12........16......12/13.......14......14/15.......16....
.Int.....17......15/16.....15/16.....15/16.....15/16.....15/16...
.Wis.....10........10........10........10........10.......8/10...
.Cha.....10.......6/8........8.........8.........8.........6.....
Ability increase every 4 levels: All in Dex.

Skills (except Human and Drow): At all levels, keep maxed out Search, Disable Device, UMD, Open Locks, Spot, Balance, Diplomacy, Hide and Move Silently. Split your remaining points equally between Jump and Tumble.
Skills (Human and Drow): Same, but you should be able to max out both Jump and Tumble instead of splitting points between them.

Feats (by level), except Human: Toughness (1), Rapid Reload (3), Point Blank Shot (6), Precise Shot (9), Improved Evasion (10), Improved Critical: Ranged (12), Skill Mastery (13), Improved Precise Shot (15), Slippery Mind (16), Rapid Shot (18), Defensive Roll (19)
Feats (by level), Human: Toughness (1), Rapid Reload (1), Point Blank Shot (3), Rapid Shot (6), Precise Shot (9), Improved Evasion (10), Improved Critical: Ranged (12), Skill Mastery (13), Improved Precise Shot (15), Slippery Mind (16), Skill Focus: Use Magical Device (18), Defensive Roll (19)
Special note: The feat progresion for all races was modified on 2011/04/21 when the build was converted to ranged instead of melee. If you started this build prior to this date, you can find the old feat progression to follow in this post.

For more information about picking enhancements please read this post.Enhancements (Rogue): Cheat Death (capstone), Dexterity II, Disable Device III, Fire Trap Lore I, Haste Boost III, Improved Trap Sense II, Mechanic II, Open Lock III, Search II, Skill Boost III, Sneak Attack Accuracy II, Sneak Attack Training II, Spot I
Enhancements (Drow): Dexterity I, Enchantment Resistance I, Keen Eyes I, Perception I, Racial Toughness II
Enhancements (Dwarf): Constitution I, Racial Toughness II, Spell Defense II
Enhancements (Elf): Dexterity I, Enchantment Resistance I, Keen Eyes I, Perception I, Racial Toughness II
Enhancements (Halfling): Cunning II, Dexterity I, Guile II, Hero's Companion I, Luck (Reflex) I, Racial Toughness II
Enhancements (Human): Adaptability Dexterity I, Greater Adaptability Intelligence I, Improved Recovery I, Racial Toughness II
Enhancements (Warforged): Constitution I, Healer's Friend II, Racial Toughness II

Soloability by level:
No hireling..: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
With hireling: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Tips:- You only gain proficiency with light repeaters at Level 6 (with the Mechanic I enhancement), which means that from L1 to 5 it is best to use a rapier (possibly with a shield that has zero Armor Check Penalty like a Light Mithral Shield). You may also use a regular crossbow, but your damage output will be significantly lower than with a rapier in hand.
- In order to make these early levels easier (especially if soloing), you may pick either Weapon Finesse (to boost your to-hit with a rapier) or Exotic Weapon Proficiency: Light Repeating Crossbow (to start using repeaters early) as your L3 feat. Once you reach L6 you can respec out this feat. Another option is to get proficiency in Heavy Repeaters and drop it only at L12, in order to be able to use both kinds of repeaters from L3 to L11.
- Once you get Mechanic I at L6, start wearing items that boost your Intelligence: your Int modifier is added to the damage you deal with crossbows.
- Use Diplomacy to politely ask your opponents to attack someone else. This will let you land sneak attacks more reliably.
- You do not have to sneak to land sneak attacks. Read this page for more information on sneak attacks (in particular, on ranged attacks you need to be close enough to your target).
- If you ever get to the point (around L16) where you start running the Shroud raid regularly, consider crafting a Radiance heavy repeater. It is a great weapon for such a build.
- Ultimately you would want to reach 39 UMD to be able to reliably use Heal scrolls. This can be achieved for instance from 23 (base skill at L20) + 1 (Skill Mastery) + 3 (16 Cha with +6 item and +2 Cha tome) + 4 (Greater Heroism) + 2 (Head of Good Fortune) + 6 (exceptional bonus from Shroud raid item), which are reasonable items to obtain if you get all the way to level 20. In the meantime, accept you may fail some checks and rely on your skill boost to make it less likely.
- As a Mechanic, you are the best at making traps, which you can do starting at L4. Read more about trapmaking here.

Variants:- I would like to thank Brennie and ReaperAlexEU for coming up with similar builds much faster than I did.
- It is possible to take the Mechanic enhancements as a melee build, for an example (now outdated though) see here.
- The last Rogue specialty feat at L19 can be changed e.g. for another Skill Mastery (+1 to all skills). From the information I could find on Opportunist and Crippling Strike, those would not work on ranged attacks and are thus not suited to this build (but I would appreciate if someone could confirm this information).
- The L18 feat on a Human can be replaced e.g. by Weapon Focus: Ranged (if you find your to-hit is not high enough), or Weapon Finesse (if you find you need to melee sometimes).
- Although overall the Bluff skill is currently not worth investing into, it may be improved some day. And if you are planning to solo a lot, it can be somewhat useful to land more sneak attacks. To get Bluff, split some points between Balance, Jump and Tumble (instead of just Jump and Tumble) so that you can max out Bluff. Among Balance, Jump and Tumble, Balance is the most important, while you can stop investing in Jump and Tumble once you are comfortable with respectively how high you can jump, and from how high you can fall without taking too much damage. Note that a 40 Jump skill (with buffs) is the maximum you need, and at L18 you can obtain a Jump clicky that gives you +30 to it.

Color code: best to worst = green, yellow, orange, red