CRYSTAL DEFENDERS

This is a simple trophy. You need to earn 10,000 or more points in a single map and the amount of points you get the end of the map depends on three things:

1) How many waves you cleared (100 points per wave)
2) How many crystals you kept by the end of the map (200 points per crystal)
3) How much gil you kept by the end of the map (1 point per gil)

You can also receive bonus points if you meet the requirements for 2 "hidden" objectives:

1) "PERFECT" Bonus: If you manage to complete a map without losing any crystals, then you will receive a bonus which is 1,000 points.

2) "Strategist" Bonus: If you manage to complete every wave without upgrading or deploying new allies after you start a wave (when the enemies have already started entering the area), you will receive another bonus which is 900 points. For each wave you deploy or upgrade a unit in that period, you will lose 30 points from the 900 points sum. (30 waves x 30points= 900 points)

If you find it difficult to reach this score, then check the videos in W1 Defender, W2 Defender and W3 Defender as they offer perfect playthroughs for each map.