Walkthrough (Normal mode)
Grunt	Description of what to do
Bare-handed #1	This is the only Grunt (initially) free to move ... so start with him. When he createz another Grunt, or freez one, choose what to do with him.
Bare-handed #2	Can't move, but when he can, do stuff ... as search for a Tool, etc.
Sponge Gun #3	Can't move ... for a long time! When he can, he injurez his own teammate!