@ A.C
Do you know the frame sequence the animation has?
If so, then import your mesh via GGMax importer as FBX with animations file, and you will have to create the animation slots, i.e your mesh has 1 animation (100 frames)
slot1 "animation name" - "start frame" - "end frame"
death1 - 0 - 20
death2 - 50 - 75
and so on.
About behavior, stock asset use stock behavior (script) so, you will have to write your own, that suit your needs.
I.e a door use 2 "open" and "close" so, if you want to use your own door, most likely you will have to name your anims the same or use your own script.
Laptop: Lenovo - Intel(R) Celeron(R) CPU 1005M @ 1.90GHz
OS: Windows 10 (64) - Ram: 4 gb - Hd: 283 gb - Video card: Intel(R) HD Graphics
cpu mark: 10396.6
2d graphics mark: 947.9
3d graphics mark: 8310.9
memory mark 2584.8
Disk mark: 1146.3
Passmark rating: 3662.4