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A collection of various tips and tricks during gameplay.
By opening only a 1 tile wide tunnel to a chamber, a limitless amount of creeper can be held back with a single Cryon, allowing rockets to deal massive damage without much danger.
This strategy gets complicated if other dangers are involved, such as bots. If no bots are involved, shields can serve as a temporary replacement for the Cryon.
Against stationary enemies, it is possible to nullify them through one of these 1 wide hallways, however shields in the hallway will block the nullifier beam.
These hallways also do not need to be straight; so long as the entire path is in range of the rocket, the rocket can navigate through the hallway to attack the creeper. Long zigzag hallways with shields can keep the creeper back for minutes or even hours while still allowing rockets to fire through them.