Sort of since what the DM says ultimately goes, but no - a crit fail means your effort just fails no matter what. Now, it may also mean that your acrobatics check ends in you slipping on a banana peel and breaking your back, but it doesn't have to be dramatic.
So, crit fail means that no matter how skilled you are, you have a 5% chance of failing anything you attempt (without advantage, lucky, etc. anyway)
Does the DM 'have' to make it worse than a normal fail? I know some swear by it, but I've never actually looked if it's any written rule or suggestion.
No not at all - it's just fun to. A nat one on attacks always misses though. Some DMs say if you nat one your attack you might hit a teammate or do something else disadvantageous, but it's all contextual.
Sort of since what the DM says ultimately goes, but no - a crit fail means your effort just fails no matter what. Now, it may also mean that your acrobatics check ends in you slipping on a banana peel and breaking your back, but it doesn't have to be dramatic.
So, crit fail means that no matter how skilled you are, you have a 5% chance of failing anything you attempt (without advantage, lucky, etc. anyway)
Does the DM 'have' to make it worse than a normal fail? I know some swear by it, but I've never actually looked if it's any written rule or suggestion.
No not at all - it's just fun to. A nat one on attacks always misses though. Some DMs say if you nat one your attack you might hit a teammate or do something else disadvantageous, but it's all contextual.