I was determined to be the Level 2 boss without using the grenade trick.
I am not so determined anymore.
I've actually tried to pull off the grenade trick just to see how it works, and so far I can't do it successfully. Thankfully, I had a full Gun meter when I took on the Level 2 boss, so he died without me taking a single hit. It took several tries and lots of grenades, but I finally managed to beat the Level 3 boss with only a sliver of health left.
Unfortunately, I now have the Hover Pack, and I have to use it to reach the next area. I
loathe how Sunsoft coded the Hover Pack, forcing you to gather up these "H" symbols to fill it up instead of using a recharging meter. It's amazing, but up until I got the Hover Pack every other enemy was dropping those H power-ups. Now that I have the Hover Pack,
no one drops them so I have to keep going into dungeons to find them. When I get back to the tank and try going for that specific ledge, my meter's empty in less than 2 seconds (and when I'm about to land on the platform, suddenly an enemy spawns there to knock me off) and then I have to go back and get
more power-ups for another attempt. It's just sheer monotony.