Walkers Join! - Alan Walker's logo

Charcoal, 31 30 29 27 bytes

Ｆ²«Ｊι⁰↙χ↖↖⁵↙↙⁵↖↖²Ｐ↖χ↙↗χ↘↘¹²

Try it online! Link is to verbose version of code. Sadly Copy doesn't do what I want in this case, so I have to loop instead. Explanation:

Ｆ²«Ｊι⁰

Draw everything twice, but with the cursor starting one character to the right the second time.

   ↙χ↖↖⁵↙↙⁵↖↖²Ｐ↖χ

Draw the main W from right to left, but leave the cursor near the inverted V.

   ↙↗χ↘↘¹²

Draw the inverted V.

JavaScript (ES6), 172 139 bytes

let f =

_=>`1
3s1
5o5o
7k9k
9gdg
bchc
d8l8
f48194
h08590
i899
g14d41
n0h05
1p`.replace(/.p?/g,n=>' '.repeat((n=parseInt(n,36))/2)+(c='/\\'[n&1])+c)

O.innerText = f()

<pre id=O>

How?

The logo basically consists of groups of spaces followed by either // or \\ and line feeds.

Spaces and ending patterns are encoded using base-36 values:

• The least significant bit gives the ending pattern: 0 for //, 1 for \\.
• All other bits give the number of spaces before the ending pattern.

Everything can be encoded this way with a single base-36 digit except the last line which consists of 30 spaces followed by \\, leading to 30*2+1 = 61 = 1p in base-36. This p should be interpreted as 12 spaces followed by \\ but this pattern doesn't appear anywhere. So, we can simply handle this special case at the cost of 2 extra bytes in the regular expression: /.p?/.

First version, 186 bytes

NB: This one was submitted prior to the logo update.

let f =

_=>[...`WALKER'S`].reduce((s,c)=>(x=s.split(c)).join(x.pop()),`E
 ELSRE
'LK'
 'LRWLR
WSKS'SK
S ESRLESR
S'KL'K
S 'RKEWR
LEAK'WA
L AKWW
SKERS'RE
L 'ALEA'
LLLS'S    '  ER  AE\\\\KSALSSA//WSE`)

O.innerText = f()

<pre id=O>

brainfuck, 579 bytes

+++++++++[>+>+++++>+++>++++++++++<<<<-]>+>++>+++++>++..<<<.>>.>..<..............<..>>..<..<<.>>..>..<............<..>..>..<............<..<.>>...>..<..........<..>....>..<..........<..<.>>....>..<........<..>......>..<........<..<.>>.....>..<......<..>........>..<......<..<.>>......>..<....<..>..........>..<....<..<.>>.......>..<..<..>....<..>>..<....>..<..<..<.>>........>..<<..>....<..>..>..<....>..<<..<.>>.........<..>....<..>....>..<....>..<<<.>>........<..>>..<..<..>......>..<..<..>>..<<<.>>...........>..<<..>........>..<<..>..>..<<<.>>..............................>..

Try it online!

Generates the constants 47 92 32 10 in memory, then selects and outputs them as appropriate.