Clash of Clans Guide

Part 6- Unit Strengths, AI, and Pathfinding Guide

Unit Strengths, AI, and Pathfinding Guide
Unit Strengths
Each unit has its own strengths and weaknesses. The main factors to consider are Combat type (range/melee), Movement type (Air/Ground), Favorite Target (Any, Defenses, Resources, Walls), Damage per Second, Housing Space, and Cost to train. To a lesser degree, you should be aware of each unit's training time, movement speed. You can see the details of all units (not just unlocked ones) by clicking the "i" symbol on each unit in the barracks.
Here is a very high level summary of each unit. Any special abilities or quirks will be mentioned in the in-depth section below.
Unit Strengths, Weakenesses and Notes
Barbarian Good amount of hitpoints, good damage per second, cheap cost
Archer Best range, medium hitpoints, medium damage per second, medium cost
Goblin Great damage per second, especially against resources, great speed, cheap cost
Giant Great amount of hitpoints, Great specialty unit (for targeting defenses), slow movement, medium to high cost, high housing space (5), fast to train (2m for 5 housing space)
Wall Breaker Low amount of hitpoints, excellent specialty unit (vs walls), very high cost (most expensive troop per housing space), slow to train (2m)
Balloon Medium to low amount of hitpoints, air unit, great specialty unit (for targeting defenses, cannot be hit by ground defenses), high damage, very slow to train (10m), high housing supply (5), slow movement, very vulnerable to air defense, extremely vulnerable to archer and wizard clan castle units.
Wizard Low amount of hitpoints, very high damage per second, good range, low housing space (4 for a very strong unit), medium cost, slowest unit to train (10m).
Healer Medium amount of hitpoints, fast healing of your own troops and buildings (splash healing), flying unit, low cost (7000 for 20 housing spaces), medium to slow to train (20m for 20 housing spaces), high amount of housing spaces (20), very vulnerable to air defense, extremely vulnerable to archer and wizard clan castle units.
Dragon High amount of hitpoints, high damage per second, medium to high cost, high housing space (20), slow to train (30m), flying unit.
P.E.K.K.A Very high amount of hitpoints, very high damage per second, high cost, High housing space (25), very slow to train (45m)
Damage Types Comparison
Single Targe Splash Damage Splash Heal Air Targets
Barbarian X
Archer X X
Goblin X
Giant X
Wall Breaker X
Balloon X
Wizard X X X
Healer X
Dragon X X X
P.E.K.K.A X

Comparison of Unit Cost, Training Time, DPS, and Health, per 100 supply of units (Thanks again to Hult - really is a good guy! ) Note: tried to embed info graphic, may have to convert it to a table
Balloons - Target: Defenses