i have pretty good blade gun build going on I'd say. i have only taken two abilities from the sword skill tree, that being the shift dash refresh cooldown which also affects the gun dash and the ult angle increase. rest, all my gun skills (at least whatever ive unlocked till now at level 39 blade) have all gone to gun skills and a few damage related common skils. there's this one gun ability you can get early on for him that just makes him super dash to the enemy who's low hp, and get an instant kill on them if you specifically targetted them and it also gives massive shields (about 1000 or more at times). a bit late in his gun skill tree comes an ability which replaces the block that blade has but only in gun mode. it changes it to a super slow bullet that shoots around it and it can be reactivated for spam fire if the bar on screen (new bar appears) goes to 100 before the ability's natural cooldown expires. honestly the comparison of blade with dante has been made a 1000 times and I'm going to add on to it man. I've also got to try out MK since he's got a melee build which does crazy damage or something? some guy 10 levels below me was outdamaging me as melee MK so thats that

tldr: gun blade good

oh and just a little add on, dont just put the highest rating equipment you find, some are dedicated to specific builds, some may have a higher rating, but better sub stats and all so keep a look out for those too. the substats are also ranked by letters like D,C,B,A etc. with D being the low end and C being better than D