Hi @Average4PlayersGame,
Thank you for your bug report!
In current version, if you control 2 Psi-Knives, you can only remove 1 threat from 2 different schemes. Likewise, with 2 Psi-Katanas, you can only deal 2 damage to 2 different enemies.
We appreciate your feedback, and we will address this issue in the next version.
Thank you for helping us improve the game!