Trains? | Puzzle? | Cake?! [GAs ended + solution]

(Blah blah, yeah, I know, my cake day is only tomorrow but I just couldn't wait anymore. I've been excited for this for three weeks now!)
It's been two years already, woah. It feels like I've been here only two weeks ago or something.
I had no idea about my Cake Day last year, so I'm trying to make up for that this year.. kinda :D
I'm so happy to be part of this lovely community!
Steamgifts is the website I spend most time on - well, after YouTube. I just really like it here ^_^
I think I really need to stop starting all sentences with "I" lol. Sorry!

Anyway, so here are a few things for you guys :3
We have..

1. a hidden bundled train (go find it!) [level 0] over!
2. a HOG train [level 2] over!
3. two three! two again -_- unbundled gibs [level 4] over!
4. a puzzle about a cartoon series, RWBY, that leads to the early access game of said series (it does not contain spoilers; at least I don't think it does) [level 1] over!

So yeah, so there's that :)

What I love most about sg are all those lovely people ^_^ <3
Everyone is so friendly :3
Man, I just love spending my time here (✿◠‿◠)
Why are you still here? Go find that train or solve the puzzle! :D
Everyone praise cg for this website! :P

Edits:

• I may or may not have fucked up the puzzle at first; so if you tried something earlier, just try again! Sorry ^^'

• Seems like I fucked up even more. I just 'found' another giveaway that I created, ha! It's not two unbundled games, it's three, oops!

• Yeah, my Cake Day is over but the giveaways are still running, guys ^.^

• In case you are curious, the hidden train was /WEMWE/ :P