That got messy very quickly. Oops.
All fixed now. Again, check note number 6 for all changes in this update.

My custom Invisible Gnaar EP wasn't working for some reason. Something to do with it being a local file blah blah idk. I edited the the original EP inside the game's files instead. It's working on my end now but if the invisible gnaars are only doing one attack and/or are not dealing any damage, let me know because that will be another issue i'll have to fix.

Fixed now. Check change note 6.

One of the volcano fights is weirdly broken, needs to be fixed asap.

Over all changes:
-Fixed objective markers
-Includes a change to the speed of the players rocket projectiles. Increases the speed a bit, I'm convinced Croteam have been making our rockets slower with each new game.

Forum01:
-Removed invisible gnaar
-Changed the "authorities" secret

Forum02:
-Changed the pyros in the last arena to do a specific attack when they spawn

Pompeii:
-Removed harpies on level start.
-Changed spawning of gnaars on the depot secret at start.
-Changed the rage secret slightly.
-Wounded gaurd side mission changed.
--Added doors in the arena to shipping containers.
--Bike spawns for the way back.
--No fight on the way back.
-Artifact side quest has been removed/blocked off.
--It never really was that fun anyway and the level is already soooo long.
-Slight changes to spawns on the last corridor before the boss.
-Boss fight overhaul.
--The boss now enters a pained invunerable state 3 times throughout so you are forced to face the 3 waves in order to kill him.
--Also makes it impossible to cheese him with the rage gadget. So don't bother trying.
--Also gave the boss more health to account for the fact that lock on rockets melts khnums.
-I'm aware that while the khnum is in his pained state, his body moves to face you when you are close. You'll know what I mean when you see it.
--This looks weird I know, but I don't know how to stop him from doing it.

Gates of Heck:
-New secrets, new encounters and reworked existing ones. Again, as with the other levels; tried to make combat encounters interesting and different from each other.
-Using both the unused soundtracks and the actual soundtracks for this level.
-Flamethrower and grenade launcher are recieved on this level.
-New enemy theming that I think makes more sense.
-Got rid of all the mummies in the level. Sorry Croteam but they never manage to hit you, they're boring, and they are really unsatisfying to kill.
-Side mission is still there. Including the dialogue. The rocket launcher upgrade is being replaced with a grenade launcher upgrade on the next level. I obviously can't make the Professor say grenade launcher instead.
-Gnaar easter egg on the volcano top has been changed. Gnaar massacre incoming.
WIP:
-In the process of redoing the first level. This is planned to be the next update.

Removed platforming secret where you get the first set of keys in Horsemen because it also allowed you to skip some of the level.
Removed the extra skill point you get when Horsemen starts.
Changed it so you can no longer accidentally trigger the spawn for the brutes at the final corridor before the boss without first killing the gnaars.

Combined both Death From Above and Death From Below into one.
Added my reworked version of the Four Horsemen of the Apocalypse level.
Main Changes.
-Minigun is kept from previous level. Ammo is taken however, player will find more throughout the level.
-Reworked encounters, added new ones.
-Side objectives now reward weapons(C4) and skill points instead of overpowered gadgets.
-New secrets and one easter egg.
-Reworked boss fight with Cyro Khnum and 3 waves of different enemy spawns. Provides more challenge.

Few tweaks of spawns in some areas, secrets also tweaked a little bit.
More autosaves at the last arena.
Waves of enemies during the boss fight are now varied.
When the level ends it no longer starts to load the next level.