Found a solution to avoid having to install MOOSE.

Now MOOSE can be copied into the mission file, but you'll need to
include a "do file" action of moose.lua in the mission file and copy the
rest of the MOOSE files to the MIZ file.

Moose/DestroyBaseTask.lua

@@ -0,0 +1,79 @@
+--- A DESTROYBASETASK will monitor the destruction of Groups and Units. This is a BASE class, other classes are derived from this class.
+-- @classmod DESTROYBASETASK
+-- @see DESTROYGROUPSTASK
+-- @see DESTROYUNITTYPESTASK
+-- @see DESTROY_RADARS_TASK
+
+Include.File("Task")
+
+DESTROYBASETASK = {
+  ClassName = "DESTROYBASETASK",
+  Destroyed = 0,
+  GoalVerb = "Destroy",
+  DestroyPercentage = 100,
+}
+
+--- Creates a new DESTROYBASETASK.
+-- @tparam string DestroyGroupType Text describing the group to be destroyed. f.e. "Radar Installations", "Ships", "Vehicles", "Command Centers".
+-- @tparam string DestroyUnitType Text describing the unit types to be destroyed. f.e. "SA-6", "Row Boats", "Tanks", "Tents".
+-- @tparam table{string,...} DestroyGroupPrefixes Table of Prefixes of the Groups to be destroyed before task is completed.
+-- @tparam ?number DestroyPercentage defines the %-tage that needs to be destroyed to achieve mission success. eg. If in the Group there are 10 units, then a value of 75 would require 8 units to be destroyed from the Group to complete the @{TASK}.
+-- @treturn DESTROYBASETASK
+function DESTROYBASETASK:New( DestroyGroupType, DestroyUnitType, DestroyGroupPrefixes, DestroyPercentage )
+trace.f(self.ClassName)
+
+	-- Inheritance
+	local Child = BASE:Inherit( self, TASK:New() )
+	
+	Child.Name = 'Destroy'
+	Child.Destroyed = 0
+	Child.DestroyGroupPrefixes = DestroyGroupPrefixes
+	Child.DestroyGroupType = DestroyGroupType
+	Child.DestroyUnitType = DestroyUnitType
+	Child.TaskBriefing = "Task: Destroy " .. DestroyGroupType .. "."
+    Child.Stages = { STAGEBRIEF:New(), STAGESTART:New(), STAGEGROUPSDESTROYED:New(), STAGEDONE:New() }
+	Child.SetStage( Child, 1 )
+
+	--Child.AddEvent( Child, world.event.S_EVENT_DEAD, Child.EventDead )
+
+	--env.info( 'New Table Child = ' .. tostring(Child) )
+	--env.info( 'New Table self = ' .. tostring(self) )
+	
+	return Child
+end
+
+--- Handle the S_EVENT_DEAD events to validate the destruction of units for the task monitoring.
+-- @param 	event 		Event structure of DCS world.
+function DESTROYBASETASK:EventDead( event )
+trace.f( self.ClassName, { 'EventDead', event } )
+	
+	if event.initiator then
+		local DestroyGroup = Unit.getGroup( event.initiator )
+		local DestroyGroupName = DestroyGroup:getName()
+		local DestroyUnit = event.initiator
+		local DestroyUnitName = DestroyUnit:getName()
+		local UnitsDestroyed = 0
+		trace.i( self.ClassName, DestroyGroupName )
+		trace.i( self.ClassName, DestroyUnitName )
+		for DestroyGroupPrefixID, DestroyGroupPrefix in pairs( self.DestroyGroupPrefixes ) do
+			trace.i( self.ClassName, DestroyGroupPrefix )
+			if string.find( DestroyGroupName, DestroyGroupPrefix, 1, true ) then
+				trace.i( self.ClassName, BASE:Inherited(self).ClassName )
+				UnitsDestroyed = self:ReportGoalProgress( DestroyGroup, DestroyUnit )
+				trace.i( self.ClassName, UnitsDestroyed )
+			end
+		end
+		
+		trace.i( self.ClassName, { UnitsDestroyed } )
+		self:IncreaseGoalCount( UnitsDestroyed, self.GoalVerb )
+	end
+end
+
+--- Validate task completeness of DESTROYBASETASK.
+-- @param 	DestroyGroup 		Group structure describing the group to be evaluated.
+-- @param 	DestroyUnit 		Unit structure describing the Unit to be evaluated.
+function DESTROYBASETASK:ReportGoalProgress( DestroyGroup, DestroyUnit )
+trace.f(self.ClassName)
+
+	return 0
+end