Engineer

Overview

 * All towers around you deal 25% more damage. This means towers in a very close proximity - the player with this perk has literally the range of a level 1 Amp spire.
 * Unlocked at rank 14.
 * Does not stack from multiple players.
 * Stacks additively with Amp Spires.

Notes & tactics

 * Since it doesn't stak from multiple players, so, if picked, there should be only one holder of the perk.
 * It might be situationally unwanted perk in maps that have Super heavies, since when they come closer, the player is forced to either stand away from them or to put the maze and the towers at risk.
 * It finds good use in all modes, including Survival, where it can be utilized pretty freely in most maps, except the ones with Super Heavies.