you do not need to learn the engine, just take a week to test the demo versions.
for 3d i whould say on this world exists 5 good ones,
3 of them can handle 3d animations well and they have an level editor.
unity,shiva,unreal,Torque,...
for 3d animations u need fbx or (open) collada import if u not
create the models in the editor from engine.
the 3d part commands are not full implemendet in v2 alpha,
so nobody knows the comming commands.
AGK 108 (B)19 + AppGameKit V2 Alpha .. : Windows 8.1 Pro 64 Bit : AMD Radeon R7 265