I do want to preface this by saying that a majority of the mod was quite enjoyable and that it's really cool to see the modding tools being used for something this technically impressive. This could've easily been something that was in the base game story mode. However, there are a couple of issues, particularly towards the end, that made it a bit harder to enjoy.

Firstly, the melee enemies, though this one isn't really that big of an issue. Since a majority of the guns that can be looted off the ground have a rather long range sweetspot and the melee enemies all have rather large tac-bars, you won't actually be able to kill most of them using guns without burning through a lot of ammo. Having to swap to a melee weapon to get the melee fellows off you in the middle of a firefight generally meant that the right play was just hiding somewhere where you wouldn't be shot at while waiting for the melee enemies to come to you. This does somewhat kill the flow of the fight.

Second, the "puzzle" sections. These weren't especially difficult, but I will say that the random "find specific weapon to continue" and laser tag targets were just a bit annoying after the first.

By far the biggest issue I have with this mod is the bossfights.

The "Leader?" with a machine gun was just downright frustrating, and I'm not entirely certain what the modder actually intended for you to do. His reload time is insanely short and is effectively impossible to exploit, getting shot for any amount of time will do absurd amounts of damage or just outright break a corpus, he'd pretty frequently just get close to one of the walls intended to break sightlines and poke the barrel of his gun over or through it to shoot you, and he'd magdump for so long that I think it was giving him time to regenerate since I wasn't able to peek out and shoot him without just getting obliterated.

The helicopter fight wasn't really that bad for the most part, though I'm pretty sure the railings were interfering with my ability to aim properly. A majority of my shots weren't actually going towards the helicopter, but instead into the railing or the air underneath the helicopter.

The final boss wasn't really all that difficult or annoying, though I will say it'd probably be a good idea to make it a bit clearer that you need to do an execution on his back, since it wasn't especially clear.

Again, this is a really impressive mod and I did have fun for most of it, but I do think that there are still a few issues. I do look forward to any other projects you end up doing!