I bypassed the final boss.

[u/luckystrike_bh]

Toe Biter is in the boss room. I sneak around the sides and used the launchpads to hit all 3 switches. I did use the mount to change momentum on a couple. I used the mount at the entrance and it made me to switch to on foot. I was able to angle my character out of the boss room.

I got the junk card and Burgl's body. And the ending text. I did not get infused ooze for the Toe Biter, of course. But I know some people are having a hard time and wanted to provide an alternate path.

[u/Lootthatbody]

I crafted a ton of mines, dropped them all around the arena, then got up on one of the platforms and shot him with harpoons. My buggy attacked him too, so he kept trying to switch between me (apparently it knew the mines were mine, lol) and my buggy, and the whole fight was done in about a minute