Visual Boy Advance. Run starts (for viewing purposes, not timing purposes) at 0:29
Mostly a test of OBS. I don't believe this is my personal best, but I forgot to record the previous PB, I'm not very good with LiveSplit so the late time there probably doesn't mean much - I at the very least know it wasn't a WR for G&WG3-Mode A-4K though, since I would remember that. Will need to figure out the best timing for the first snapper - rushing through then jumping is presumably best, especially given the chance of perfect timing with the key, but if that fails I'm not sure if dropping the grenade or hanging out on the rightmost vine is best. I haven't watched any other speedruns of this game but they should be good reference (and I probably should, even as someone who doesn't take speedrunning too seriously)