Aw man, I've got tender memories of AVM.
I remember in stage 4 of Slope Zombies, and I only had the pistol and the wrench because I had left all my supplies in the crate back at Kaje's Fort. So, spawned a magic carpet with the last of my brick resources, only to find the zombies had totally invaded the base. Then, I remember I had one Pipe Bomb in my saved inventory from stage 2, so I managed to throw it into the main door(I was really lucky), which halved the entire population of zombies. I parked the carpet, got off, and blasted away the rest.
Sloped Zombies stage 5 is crazy tough. If anyone needs help on it, holla.