It seems like I have everything set up properly. There's the model, with frames, and a skin file. It shows up in Milkshape no problem if I import it, and it was animated in Milkshape. But I can't see it in the game for some reason. The actor spawns (I checked), even the active state can be achieved.
Please help me figure out what I'm missing. The prize: feel free to use the model.
UPD:
Silly me. Turns out I can't use TNT1 as sprite reference for frames, they have to be some actual sprites.
Anyway, feel free to use the model, it works just fine.