First Step: doing the tentacles animations using some sin equations. and attaching them all to the sentinel head.
Second Step: doing some particle animations following a curve using the pop curve force operator, then some trails were created.
Third step: the trails were used to control the deformation several sentinels, one for each trail, i used again the path deform that i did in vex.
There is still some collisions between the sentinels that have to be done, maybe the next time.