NOTE: SPOILERS!
This is just what I think of the game, so if you're reading this out of boredom, I'd suggest you play through the game first.
This was honestly more than I was expecting for this short amount of time! I'll be focusing on the main game, as waves are self explanatory.
I really like the grab and how it can actually change up the gameplay a bit on it's own now, and the melee weapons are meh. They don't do a lot more damage compared to your fists, but on the bright side, I love the additional air attack just because it at least switches up the air attack game. They also look cool, so hey, who cares? Throwing is powerful though; Aiming it to severely damage three crowded enemies at once is a change of pace of just spamming Z.
The changes here I'd like the most is the controls. I'm not saying that you should allow custom key binds (even though that might not be a bad idea), but rather that you should make it so that X sometimes don't make you for example pick up a weapon instead of grabbing a furry. This has happened to me probably once in the main mode, and fortunately the consequences weren't that bad. Waves however... Because it ends up spawning from a dead enemy, I end up grabbing a weapon and losing half of my HP. I think you should switch the pick up option to C. I've also thrown the shotgun away on accident because I thought X was the shoot button. I think it might be best if you switched X and C, but this might not be such a great idea if the pick up option wasn't changed to C because people would probably be used to X being the throw. I might just be sick in the head for my brain to go "hehe throw bullet"
As for the new interactions and endings: they're excellent! It makes it so that what you do in the game actually has some kind of weight in the end and the way that this is done is very clever. I did not expect Colin to literally dunk on Puro in the second cutscene. As somebody who appreciates games who can make the protagonist more evil because of your actions, it gives me a smile. Sure, call it sadistic, but it's so much cooler to see yourself be the bad guy in a story that's meant to originally picture you as the good one.
The only mediocre ending is 2/4 Neutral, but I understand why this ending even exists. Whoever got that ending must be pretty boring... For me, my first ending was 1/4 Deceived.
The endings are pretty good, but can improved in my opinion. I'll go from 4-1.
4/4 Destruction
The fourth ending is probably the best ending for all of the characters. This ending actually shows Dr. K because of the cameras are broken so he actually has to you know, go outside and touch some grass come to the room. I think this might be an excellent ending for players to get first, as I probably would had gotten it because I didn't really care about how many things I was destroying. It definitely shows the fact that the game very much acknowledges your actions. As for the reason why this is a pretty good ending is because it, as I said before, actually shows Dr. K. I think the fact that he isn't included in the rest of them and is only shown by a single text box in Deceived is... A bit lacking.
3/4 Pacifist Pacifist! I've seen that you liked this suggestion by Davy. It's definitely nice, and I like that it actually makes it pretty damn obvious that if you're trying this ending that it's probably not your first run, so it just makes the run much faster, alongside the fact that you skipped every level. I honestly think if you made it so the enemies at least looked you while standing still or were relaxing in some kind of way could had been cool, and I felt like Squid Dog being completely gone was a missed opportunity. I expected to either fight him or for the latex to rebel against him, even possibly for there to be a fake out, to make it look like Squid Dog was about to begin the boss fight, but then just literally rested his body on the ground or something.
2/4 Neutral This ending is mediocre. Not gonna sugar coat it in this post... If you got it, you're probably a coward who didn't fight the furries and missed the point of the game. I understand the inclusion of this; you didn't go down a specific path, there you go, neutral. I don't really have to say anything about this one as it's pretty much a filler ending that I myself don't have any ideas for. Oh well.
1/4 Deceived
This ending is the second most game changing asides from pacifist and I really like it. Reminds me of other games that had this kind of thing. It has stunning visuals compared to the other endings and was actually really pretty to look at, alongside the room before that. I really have to applaud this game for that. When you do decide to pick yes, it really just follows up with the look of everything.
I picked no on my first run and I was pretty disappointed that Colin didn't at least fight back in the form of a cutscene at least, as I was expecting there to be a boss fight or something. I can't blame you guys though- This game already has a bunch of content and it's completely understandable if you guys didn't bother adding every possible little thing. The only real issue I have is that after I picked no, I wanted to restart where I was and select yes. However, this ended up in me having to replay the whole game just to pick that option. Gladly, I had fun playing this game so it wasn't that much of an issue, but I feel like many people would had gotten irritated.
I don't know how to feel about Puro and Colin (and sometimes Dr. K) going into that room, though... It felt off. We don't know what exactly happens there and I honestly expect there to be some kind of secret ending because of that even though it doesn't probably exist. It left me off with a mysterious ending if I didn't get 1/4 Deceived. Is Colin outside? Does it end up going to the original Changed endings? Is Colin still transfurred or attacked? I'm not sure how to feel about this. On one end, it could be intentional so you could can come up with your own conclusion. But for the latter, it might had been just something mid-production that wasn't thought about.