Glad you had a good time. I had considered adding in an invulnerability duration for respawning, but felt like if the player was being spawn-camped, the situation was dire enough to end in just a few respawns anyways. Assuming you die 3 times in a row and then SOMEHOW manage to dig yourself out of that hole, I think the player gets that rush of adrenaline and a feeling of accomplishment I was aiming for.
I am glad I went back in and threw together the Endless Mode. Wish I knew how to get an Online Leaderboard going for it tbh.