I don't see why it should be perked when compared to other aircraft with seriously heavy firepower which aren't. I say this is because it had a relatively low firing rate of 1 round every 1.5 seconds (this was what the pilots who actually used the guns reported as against the claims of it being able to fire 25 rounds in 20 seconds), so it's perhaps not the super weapon it sounds.
Operational from September 1943 to May 1945, the Tsetse was used by a special detachment of 618 squadron attached to 248 squadron from September 1943 to May 1944 and was then absorbed into 248 squadron. 248 squadron operating from North Coates and then Banff used them on shipping strikes. They were transferred to 254 squadron in North Coates in March 1945.
The Tsetse Mosquito was the FB.MK XVIII, a development of the FB.MK VI and had Merlin 25s. Accounts of numbers built vary but they certainly were a rarity. In October 1944, Air Chief Marshal Douglas Sholto, Commanding 18 Group, asked for more MK XVIII Tsetse Mosquitos but was turned down because rockets were beginning to be installed on Mosquitos after successful trials at Hatfield in September and October and this was seen as the way forward. Sholto then decided to abandon the Tsetse and put in a request with Portal that all his Mosquito squadrons be equiped with RPs (rocket projectiles). 248 squadron made its first rocket armed sortie on 26 October. The Rockets were 60lb semi armour piercing to begin with but were replaced by 25lb solid heads which were better suited to attacking ships, punching holes through the hull, which in turn let the water in resulting in flooded compartments and sunk ships.
18 Group Coastal Command records for Deployment as at 1 January 1945, list 6 Tsetse Mosquito XVIIIs on strength with 2 available for service. They had all but been replaced by the MK VI with rockets.
I have in my own collection, a picture taken from a 248 squadron Tsetse firing its gun at a ship. A glowing bar of light (the shell) can be seen in the bottom centre of the photo, heading straight for the already damaged ship. I reckon it would be a fine addition to Aces High 2.
KD