2-player co-op mode would swap controls between players

Items would be duplicated or removed each time game started and character unlocks were undone

Crashed randomly during the missions after unlocking the third alien character in the city

Player 2 would spawn under the floor and be stuck in a death loop, NPCs would not continue story missions or say their correct dialogue, stopping me from progressing through the game, and Player 1 would teleport to the wrong area randomly.