Unlike the original puzzle, this one has exactly four Gruntz (maximum), not 6 or 7. Only one GooberStraw, so turn enemy Gruntz into non-entities any way you can, once you have your four Gruntz. Like the original, one Grunt will give his all for the cause, leaving no Goo behind.
Discussions with SwordGrunt early on in BETA testing, caused a design change, eliminating a GooberStraw (and reducing solving time, with less Goo sucking), and also eliminating two GruntCreationPoints. Look around for a Blue Wormhole ... that's your entrance into the King's Fortress compound.