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Co-Operation is an achievement in BTD6 introduced in the Version 11.0 update. The achievement is earned once the player plays one map in Co-op mode and reaches the victory screen successfully. The reward for completing Co-Operation is 50.
Strategy[]
Summary[]
Co-Operation is a trivial achievement that has a small reward for its completion. The achievement can be obtained through regular play as it requires the player to win a single map whilst playing Co-op. The achievement isn't recommended to get if only looking for its rewards, as some players will have a decent amount of Monkey Money by the time its achieved. It is required for the player to be Level 20+, as it is a Co-op achievement.
Tips[]
The player can do a Quick Match or play privately with friends, it doesn't matter as long as they win once in Co-op.
Easy difficulty can save time and can be easier for newer players coming into Co-op.
Optionally, the player can play 4-Player Co-op to also get the Four times the fun achievement along with the Co-Operation achievement. This can make the rewards more acceptable if the player has a good amount of Monkey Money already.
Bloon Science·Gimme that!·Extortionist·Sweet Revenge·Best Served Cold·Guardian·Epic Defender·Defender·You Shall Not Pass·Attack Run·Dark Dirigible Titan
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