So I just finished BMZ recently and loved it enough to make it the first game i speedrun. Are there any tips that you guys could spare to help me along my way? They would be much appreciated

I would say look a few speedrun videos or try it yourself.

For Jason Any% is it kill the bosses that you need, dont do any other things, like taking mines, upgrades ect. Must of us has his own speedrun tatics and we think the best way to learn, is to try it at you own.

For 100% there is a guide in the forum, not updatet yet for new versions, but could help a little.

Destroyer Mode do it only you want it, its really hard and frustrating sometimes.

As Mathwe said, just watch a couple of the top runs for any categories youre interested in. The game doesnt really have any crazy glitches or anything like that, so the route and strats used are pretty straightforward and easy to pick up by watching runs. You can also join this discord server https://discord.gg/fbv9HN6 , where a lot of the BM series speedrunning discussion happens.

Im considering making Any% tutorials for each of the characters after AGDQ, but that wont happen for at least a few weeks.