Hello everyone willing to read this,

First and foremost: I DID THIS SOLO
So I went though the IMF a couple of times and here's what I've gathered.

First Floor:
Ok, so the red rovers tripped at the beginning for a second, but that part was easy to get though still.
The right side really didn't change that much you're just going backwards and added a few extra enemies, that's about it. No problems i would normally have, except the enemies you added at the end, that added the right amount of difficulty that part desperately needed, still doable with extra caution.
I liked how the left side changed, but at the same time there really isn't much i can say about it other than the fact that the switches makes fighting enemies way easier (isolating them and taking them out 1 or 2 at a time) although there isn't much you can do about that. Also, i think you should add those gun puppies in the middle of the section with the rockets and spikes instead of at the end. My favorite part was the the rockets came from both sides, i wish it was longer so i could just weave in and out of rockets all day XD.
The added rockets during the fire floor didn't add much, 'nuff said there.
I was kind of disappointed at the last section because the enemies spawned IN THE EXACT SAME PLACE. They should at least spawn somewhere that will give you a little more trouble and a chance to get surrounded, I love it when that happens.
Overall, The first floor was the equivalent to playing a Mario Kart track in mirror mode.

Second Floor:
The First part, where the power is off, really wasn't much of a change, just a couple enemies added, nothing special
Adding switches to the bridge, a big waste of time. It didn't add anything besides the fact it took an extra 30 seconds to complete (I wasn't carrying a gun, even so).
Everything felt about the same until that dreaded switch room before the boss. I'll be honest, that turret messed me up quite a bit, shocking me, then getting hit by a fire attack, then dying until I realized that I had Shivermist equipped. That made it easier but the turret was still a bit of a problem. Also got a Rock Jelly spawn, which was awesome.

Boss(es):
My reaction at first was like O_o" but then I lol'd
Those Spiderbots (scuttlebots?) drove me insane, but nothing really changed, except the fire part where they were on fire and they actually aim for the row you're in. I was expecting a combination attack, and i got none.

I died a lot, but that was mostly due to lag, not sure if anyone else had that problem but I sure did.
Mixing fire and shock was a great idea, such a deadly combination.
Needs more CR, 3.5k really isn't worth the map. Although i can see why the output is so low, you're mostly fighting against the map and the enemies are there to impede you, not fair places to put enemies. I know it won't be anything like an FSC run but try for at least more than a Jelly King run.
Enemy A.I needs a little improvement, half of the enemies were fighting me and the other half were just running into a wall (It was the lichens). I don't know whats so interesting about a wall but something needs to be done about that.

Overall, I believe this would be a good boss level for people coming into T3. I'm not a master at Tier 3, which makes doing FSC scary hard for me, but I died 6 times, (3 of those being lag and 2 of them were in the same place, the room before the boss) which i think is pretty good.

Thanks for reading!