You can only press space to shoot after you have locked on to at least 2 enemies
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Haha thank you for coming back to try it. It was because during playtest i realised that the player would just run away and take their time to type a combination and space, then another combination then space and they didnt really felt the pressure to try to target as many enemies as possible while they were within range which is when the chaos start to happen especially with the ricochet upgrade.