Guide to GRiM
Medics- Keeps the troops alive long enough to finish a base off in the last seconds! Unload them with the Grenadiers in case of remaining rocket or mortar. I recommend 1-2 boats of medium leveled medics.
I personally prefer Everspark because the critters can distract key defenses buildings.Send her out with grenadiers and medics as somewhat as a shield
Use GBE on these defenses-
5 highest 1 lowest
Shock launcher- 5 -- These can slow you down enough that you could run out of time is the highest threat.
Rocket launcher-5 -- Take out as many of these as possible if you have to leave one standing.
Sniper tower-4 -- These can make quick work of grenadiers but enough riflemen can overrun.
Mortar-4 -- The slow firing allows it so one is no problem for the medics.
Boom Cannon-3 -- Riflemen make quick work of these but grenadiers are in their range.
Machine Gun-2 -- Enough can wipe out a lange number of riflemen if grenadiers cannot deal with it.
Flamethrower-2 -- Can flare around out of its range if needed.
Cannon-1 -- Grenadiers outrange and riflemen can overpower.
Shock these if necesssary or if it is possible to overrun it with riflemen deploy them a bit earlier.