Hitboi

This Spongebob scene is the answer:

Yes, it is possible to do all of these in ZScript and perhaps also Decorate. There is a mod called ZMovement that extends the normal Doom movement and has dashing, sliding, grappling hook, ledge grabbing and wall running using ZScript. Looking at the contents of ZMovement, I think you also need a KeyConf (to add custom keybinds), MenuDef (to create a custom options menu) and CvarInfo (to set up the amount or existence of some values) lump. The latter two lumps are less necessary to add than KeyConf but I mentioned them for customization anyways. I don't want to reference code from ZMovement's "ZMovePlayer.ZMV" script (where iirc it has some (all?) of the features you mentioned) because it's too complicated and long for me to fully understand. Getting pulled towards surfaces, enemies or items getting pulled towards the player are possible. But I think triggering switches is more of a mapping thing, however the idea of the player being pulled towards a wall can make them be able to reach a switch, unless it's partially enclosed to the point where the player can't reach it :( "is there any way to make these class specific?" For some reason Doomworld doesn't let me add another quote, anyways, there is a way to do it by adding new player classes, I don't know how to do it but by reading some of the stuff in the wiki page it looks easy to me.

Part one in Valiant, which is currently Map04. Replayed Vanguard this year and I'm having fun with the new chaingun and enemies.

Today I just beated the 3rd episode, I don't care for the Nocturnal Missions so I guess I technically completed Wolfenstein 3D. Hooray!

Considering that Codename_Delta suggested both of us to do a collab on the slot of Map04, would you agree to do it? Or take the slot/lend me the slot?

Yes. I did that in Plutonia Map29, there's no recorded proof but I did it in the outdoor section where I fired a rocket, did wallrunning then got extremely fast until I bumped into a wall and waited for the rocket to hit the wall.

Real life stuff and me being lazy is slowing me down from mapping, so expect me returning to my map on the 22nd of this month (which means 10 days before the deadline! I guess I can do it before May ends).

I use SLADE3 to convert, the version I'm using doesn't support converting MIDIs to MP3 but it can convert a MIDI to WAV.

Boaty McBoatwad is a megawad. Just like the title, the main theme of maps is about boats: There's also TNT: Threevilution, which is an epic unofficial sequel to the original TNT and a follow-up to Plutonia 7:

Xtroose's 8-bit Binary Addition, a calculator in Doom, it's not really odd, but it's designed for Boom: https://www.wad-archive.com/wad/8-bit-Binary-Addition

Exaggeratingly wide Doomguy with poor bilinear interpolation stuck inside a void

This is irrelevant to Fabian's question, you could've just replied with "yes/no, I do/don't know what 'PGUP' and 'PGDN' mean". Because Fabian said the multi-page save menu feature will be in the next release, which means navigating it with page keys might also be implemented in the next release.

Nope, you've only truly beaten Doom if you played it on Nightmare meanwhile a hamster is powering your computer and you need to feed him every five seconds!

Based on @osjclatchford's edit: Removed the dark grey bits of the lava, converted every flat to the Doom palette.