Would love to do runs of the credits warp cat, can anyone make a vid to briefly explain what to do?

so it's actually pretty simple, the start of the run is pure rng with the drops etc. And the actual glitch is performed by hitting jump as the screen transitions down, it's not super tight either.

Thanks, never played the game before, do I need specific drops to be successful? And is there anything I need to know about clipping through plants etc?

The number of drops determines how fast you can beat the game, as they serve as ammo for your special shooting ability which is much more powerful than your regular attack. That being said, all you actually need are enough drops to blast the doors open (3 x 5CP each) and to use your second special ability to reveal the elevator (1 x 10CP once), each refill gives 30CP and you have a maximum CP based on level.

To be honest I've never gotten the forward damage boost consistent for plants, nor other enemies.

For the credits warp at the end you are actually abusing a non-specific elevator screen transition glitch. All you need to do is hold down and jump at the screen transition. This can actually be done at many elevators if you don't have a good way of practicing, it's just that it's not useful on those other elevators.

Watch some top runs, watch the TAS and just try to emulate some of the behaviour yourself, I'm sure you'll get it in no time. It's a fun run, and actually quite a fun game to play casually.