Heh, sorry for the Superhot video spam as of late, but the game makes it so easy to upload the videos.
Gate Hard Mode:
The hardest part of this level for me is once you kill the first three guys (shotgun guy by the doorway, pistol guy who rushes into the room, rifle guy by the truck through the window) after you hotswitch into the guy I assume they intend for you to hotswitch into.
I mean, the pistol guy who appears outside the door is easy enough, but then you have to deal with three assault rifle guys, one charging towards you and two from across the way. The speed demon in me would toss the shotgun at the pistol guy, grab his pistol, shoot him, toss it at charging assault rifle guy, grabbing the assault rifle, shooting him, ducking behind the wall between the other two assault rifle guys, popping one, and hotswitching into the other to end the level.
The problem is I'm not good/fast enough to do that, one of the assault rifle guys cuts me down before I can finish that sequence. So the less cool way I do it here is draw pistol guy in, toss the shotgun, grab the pistol, shoot him, circle in place like an idiot to get my pistol to reload to pop AR guy as soon as he appears, fart around some more to get my pistol to reload again (I could step into the open and grab the AR and use it, but I find myself eating a bullet from one of the AR guys if I try), then quickly step out the door pop guy on the right and hotswitch into guy in the left. And all that jinking around to get the pistol to reload just seems so inelegant.
Lobby hard mode:
With an assault rifle guy charging towards you and enemies busting through from both sides, the hardest part is surviving the first few seconds. I believe I've mentioned this level before, my preferred method is to charge left pistol guy, cut him down with the katana, then toss the katana at assault rifle guy and going into the room to the left. Of course, my success rate with actually hitting that guy with the tossed katana is maybe 30%. I mean, rushing into the room gives me protection from him if I miss, and him having to follow me in gives me some breathing room, but its not as pretty. And that means I have to cover two directions instead of just one.
Of course, the next step is taking out the guy with the assault rifle in said room. Now, the cool way to do it would be to grab the pistol guy's pistol in the air after tossing the katana and beating assault rifle guy to the punch, but alas, I'm not that smooth, so I hotswitch instead, which as I've said I loathe to do if I don't have to.
If I was ballsy, after hotswitching, I woulda grabbed the katana off the wall, charged back into the lobby, toss the sword at the approaching pistol guy, grabbed the shotgun by the wall and take on all comers. But, I opted to go back for the pistol on the floor instead- I was lucky, the assault rifle guy died right by the opening, so after I take out pistol guy, I'm able to pick it up, making fighting the last three guys that much easier since I don't have to wait on a reload between shots if I were using the pistol or shotgun.
Meeting hard mode:
Now this is one of my favorite levels, and requires some quick improvisation depending on how things play out. The beginning is easy enough, toss phone at first pistol guy, grab his pistol, shoot him, toss pistol at guy behind window in the monitoring station to get him to drop his gun, punch second pistol guy coming out, shoot him with his own pistol, then shoot guy in the room, then quickly round the corner and pop shotgun guy.
This is where things end up varying wildly. Now there's two unarmed guys who will charge you, a pistol guy on the left, and an assault rifle guy on the right. I usually toss the pistol at assault rifle guy to stun him and then grab the shotgun and hopefully take out the two unarmed guys when they bunch up and charge the door.
The problem is things often go wrong with that toss. It hits one of the charging guys, or one of the buildings in the model on the table, or hits the edge of the doorway and careens off in the wrong direction. Which if that happens, my hope is I can take out at least two of the guys as I charge in, toss the shotgun at AR guy to stun him him, jump onto the chair to the left, picking up the shotgun, shooting him and/or pistol guy if he's still alive and hopefully not accidentally shred the assault rifle.
As it is, a different scenario plays out- I manage to stun AR guy, but my shotgun blast only takes out one of the chargers (though it luckily takes out the pistol guy). If I had bigger balls, I'd jump onto the chair, quickly pivot and take the remaining charging guy, before focusing on AR guy. Instead, I back out into the hall, waiting for the shotgun to reload and taking out charging guy as soon as it does. Now, this actually has the added benefit of drawing assault rifle guy out after he grabbed his weapon back.
Since I'm worried about shredding the assault rifle with the shotgun blast, I toss it at him, grab the AR, shoot him, then take out as many guys as I can charging from down the hall. (Annoyingly, I have to duck in and out of cover to "pass" time to get them to spawn and move forward) I eventually run out of ammo, so I toss it at a guy to stun him, back up, grab the shotgun, blast a guy, back up for a reload, shoot the next guy, but since the guy after that is right there, I have no time to wait for another reload.
Toss the shotgun at him to stun, grab the AR that's still in the air from the guy I previously shot, grab it, and take out the remaining guys.
Started up impossible mode, which as I've said, is just hard mode but guns only have one shot.
Corridor impossible mode:
This level is ridiculous, since the bullets move so fast in this mode, you gotta take it nice and easy, carefully dodging until you make your way to the middle to pick up the pistol on the floor. Now you got to shoot and immediately move, because whoever you line up with will shoot you at the same time if you linger for even a millisecond. The annoying thing is since you only have one bullet, you have to dodge the remaining guy some more, because if you toss it from too far, since they're stunned for far less time, he'll easily recover and just grab the pistol of his fallen comrade before you can get to him and now you have to do some more dodging.
So you just got to get close enough to toss so that you can reach him before his stun wears off and then finish him off.
Drop impossible mode:
Now, the trick to this level in this (and fullstop mode for that matter, since that's also only one shot per gun) is knowing there's a pistol right behind you- that way you shoot the guy with his own pistol (after tossing your own pistol at him to stun him), you have another pistol that actually has bullets to use on the pistol guy out there.
Now, the other trick is to know the pistol guy will move a short distance before stopping at the exact same spot every time to try and shoot you. So you just shoot as soon as he hits his mark, don't bother seeing if it hits, because you need to hop over the car and close the distance with the guys who are about to appear and rush out of the doorway on your left. Particularly since they're faster in this mode and you won't have anything to shoot at them with. If you're not already there, with two pistol guys firing at you from different directions, you'll be toast.
So its shoot pistol guy, jump over car, close distance with door guy who comes out in the open, toss pistol, grab pistol, shoot, toss pistol at guy behind pillars, and grab his pistol. Since the angle stinks and the unarmed guy who comes from around the van is a little too close, shoot him, then hop over car to catch up with the now unarmed guy coming from the pillars and melee him to death.
Subway impossible mode:
Nothing to say here, just good old fashioned quick reflexes.