Haven't been able to actually play this, as I am a poor peasant without a VR headset, but I hate to see a project that so clearly had a bunch of work go into it get so little attention, so I'll give it a review and rating based on your video! I'd love to see you put out a keyboard and mouse controlled FPS variant so others can experience it.
The game looks like quite a bit of fun. Using a VR/first person perspective works great for a kaiju game, to provide a sense of scale to the monster you're fighting. Gameplay looks to be simplistic, but smooth and bug free from what I can see. I think the game could benefit from a bit more variation, perhaps through powerups or different weapon types, even changing things as simple as damage, fire-rate, and bullet speed could go a long way! Also, adding hit effects, or a health bar to the player and large tomato could help a lot in communicating to the player whether they're doing any actual damage, and if/when they're getting hurt. Finally, I think exaggerating the little hop-walk animation on the tomatoes, making them jump higher in the air when they move, instead of just bobbing slightly could help them feel more alive. Overall, good job on this!