When I sat down with this I was expecting to play something along the lines of Battlezone. However, those expectations were quickly shattered. What I played I thought was far more reminiscent of when manually controlling the Manta Walrus tank in Carrier Command (this is a good thing), with a side helping of the Arcade mode from Vigilante 8 (if anyone remembers that?), and I played both of those to death back in the day.
The enemies do take a pounding, and their tactics are full-on Robot Wars "ram them into the pit-of-doom", but that is also what makes this a joy to play, once you realise that you're going to be rammed from all sides if you stand still then it makes for a far more interesting game to be constantly moving and having to choose your moment to pounce!
Something I liked is that it seemed that the enemies were infinitely respawning and that progression was dependant upon the player collecting certain items. I feel this was a good choice, so that the arenas did not feel empty after x amount of enemies had been destroyed, it kept the pressure up on the player to keep moving and not let up.
I thought that the crosshair could be displayed a little lower (as I found aiming difficult), and playing in 1980s mode turned all the pick-ups into mystery pickups, but it did also add to the challenge and paradoxically I quite enjoyed that 😂