This run could really improve, maybe down to even 3 minutes. The deaths on level two and three are what really get me. Each level has it's own particular difficulty. Lv1 has the minecart jump over the two gates, it takes a lot of practice to consistently get that. In Lv2 I have quite a few HP issues, but the one that sticks out for me is the underground then the final door, there are a LOT of monsters in that area in general and it is easy to die during these parts. Lv3 is considered by me the easiest of all, but in this run I failed miserably and died during it. The section where I die has a lot of potential to be explored, I think I just need to jumpboost a bit more to not get stuck in the middle of three shotgunners and get that extra HP boost (it is very clear that I lost at least 5s getting stuck in the middle of mobs). Also, when I first encounter the couple first red devil mobs I thought of jumping on top of their heads to get through more efficiently, although I did not execute that idea yet. After analyzing carefully, I think a 3' is possible. :)