Loving this game with a controller but I thought I'd give it a go with mouse and keyboard for easier aiming. Thing is - I don't appear to be able to fire!

The LMB just does the 'nibble' and RMB does nothing. Running through the tutorial it states that space fires. Odd choice - but as there's no remapping options fair enough.

The problem is - in arcade mode space just does the nibble animation again - no way to fire!